We have a lovely 2-column responsive template that looks great on desktop and most mobile devices...except for Blackberries. I'm including my code here in case anyone has any ideas about how to handle the CSS...

<style type="text/css">
.ReadMsgBody {width:100%;background-color:#ffffff;}
.ExternalClass {width:100%;background-color:#ffffff;}
.ExternalClass,.ExternalClass p,.ExternalClass span,.ExternalClass font,.ExternalClass td,.ExternalClass div {line-height:100%;}
body {-ms-text-size-adjust:none;-webkit-text-size-adjust:none;-webkit-font-smoothing:antialiased;color:#000000;font-family:Helvetica,Arial,sans-serif;;font-size:12px;margin:0;padding:0;}
p {margin:12px 0 12px 0;}
table {border-spacing:0;}
table td {border-collapse:collapse;}
.yshortcuts a {border-bottom:none!important;}
img { -ms-interpolation-mode:bicubic;}
.appleLinks a {color:#000000;text-decoration:none;}
a {color:#336699;}
@media screen and (max-width:600px) {
    table[class=columns] {padding-left:10px!important;padding-right:10px!important;border-collapse:separate!important;width:100%!important;border:0!important;}
    table[class=columnsNoPadding] {width:100%!important;border-collapse:separate!important;width:100%!important;border:0!important;}
    td[class=column] {display:block;font-size:14px!important;padding-left:0!important;padding-right:0!important;width:100%!important}
    td[class=columnCenter] {display:block;font-size:14px!important;padding-left:0!important;padding-right:0!important;text-align:center!important;width:100%!important;border:0!important;}
    td[class=columnNormal] {display:block;padding-left:0!important;padding-right:0!important;width:100%!important;}
    td[class=columnCenterNormal] {display:block;padding-left:0!important;padding-right:0!important;text-align:center!important;width:100%!important;}
    td[class=eraseForMobile] {width:0!important;display:none!important;}
    td[class=showForMobile] {display:table-cell!important;width:auto!important;max-height:inherit!important;overflow:visible!important;float:none!important}
    img[class=imageScale] {margin:0!important;max-width:100%!important;width:100%!important;height:auto!important;}
    span[class=newLineMobile] {display:block;padding-top:10px;padding-bottom:10px;}
    span[class=eraseForMobile] {width:0!important;display:none!important;}
}
</style>
<table cellpadding="0" cellspacing="0" border="0" style="width: 100%;height:800px;overflow:hidden;">
<tbody>
<tr>
<td>
<table align="center" bgcolor="#fafafa" cellpadding="0" cellspacing="0" border="0" class="columnsNoPadding" style="width: 630px;margin-top:-10px;">
<tbody>
<tr>
<td colspan="6" style="background:#ffffff;">
<p style="color:#999999;padding:0px;margin-bottom:2px;font-family:helvetica, san serif;font-size:10px;text-align:center;">
This email is the first in Invetech's quarterly Executive Series on Growth.<br/>Email not displaying correctly? <a href="http://action.invetech.us/acton/fs/blocks/showLandingPage/a/7605/p/p-0008/t/page/fm/0" target=new>View in browser.</a>
</td>
</tr>
<tr>
<td width="53" bgcolor="#4d9ebb" class="eraseForMobile"></td>
<td width="2" bgcolor="#ffffff" class="eraseForMobile"></td>
<td width="5" bgcolor="#4d9ebb" class="eraseForMobile"></td>
<td width="570">
<table align="center" cellpadding="0" cellspacing="0" border="0" class="columnsNoPadding" style="width: 570px;">
<tbody>
<tr>
<td style="padding-top: 0px;" class="column" valign="top">
<table align="center" cellpadding="0" cellspacing="0" border="0" class="columnsNoPadding" style="width: 570px;">
<tbody>
<tr>
<td valign="top" width="250" class="columnsNoPadding"><img src="images/header-left.jpg" width="250" height="160" alt="Invetech" border="0" style="display: block;" class="imageScale" /></td>
<td valign="top" width="320" class="columnsNoPadding"><img src="images/header-right.jpg" width="320" height="160" alt="Executive Growth Series: March 2014" border="0" style="display: block;" class="imageScale" /></td>
</tr>
</tbody>
</table>
<table bgcolor="#fafafa" align="center" cellpadding="0" cellspacing="0" border="0" class="columns" style="width: 570px;">
<tbody>
<tr>
<td width="338" valign="top" style="padding-bottom: 10px; padding-left: 20px; padding-right: 10px;" class="column">
<table align="center" cellpadding="0" cellspacing="0" border="0" class="columnsNoPadding" style="width: 338px;">
<tbody>
<tr>
<td style="font-family: Helvetica,Arial,sans-serif; font-size: 20px; color: #519eba; font-weight: bold; padding-top: 15px;" class="columnNormal"><i>Leading Extraordinary Growth</i></td>
</tr>
<tr>
<td style="font-family: Helvetica,Arial,sans-serif; font-size: 14px; color: #88898d; font-weight: bod; line-height: 17px;" class="columnNormal">
<p>Like many at the start of a new year, I have been reflecting on the challenges of growth. Whilst there are many dimensions to the growth challenge, I am repeatedly struck by the criticality of leadership in favourably tipping the odds. <span>Driving growth from defining, developing and launching new products requires a diverse mix of skills and taxes organisations from a leadership perspective.</span></p>
<p>Last year, I had the pleasure of reading the <em>The Catalyst</em>, an impactful book by Professor Jeanne Liedtka and colleagues at Darden business school, who studied successful growth leaders, identifying the unique attributes of those more likely to succeed with the growth challenge.</p>
<p>What most resonated with me was that successful growth leaders who formed part of the study were not the innovation superstars (like Jobs and Zuckerberg) but rather, regular corporate types who can be more easily identified with. These well-researched findings made me want to further explore the topic with the author herself in a recorded interview.</p>
<p>I hope you enjoy the conversation as much as I did. 
<img src="images/colin_signature.png" height="54" width="153" style="display:block;" alt="Colin White" /> <br /> Colin White<br /><em>President of Invetech</em></p>
</td>
</tr>
<tr>
<td class="column">
<table align="center" cellpadding="0" cellspacing="0" border="0" class="columns" style="width: 338px;">
<tbody>
<tr>
<td width="169" valign="top" style="padding-top: 10px; padding-bottom: 20px;" class="column">
<table cellpadding="0" cellspacing="0" border="0" class="columnsNoPadding">
<tbody>
<tr>
<td class="columnCenter"><a href="http://www.darden.virginia.edu/web/Faculty-Research/Directory/Full-time/Jeanne-M-Liedtka/" style="text-decoration: none;" target="_blank"><img src="images/content-col-1.png" width="130" height="130" alt="Jeanne Leidtka" border="0" style="display: block;" /></a></td>
</tr>
<tr>
<td style="font-family: Helvetica,Arial,sans-serif; font-size: 16px; color: #519eba; font-weight: bold; padding-top: 15px; padding-bottom: 10px;" class="columnCenterNormal">About the Author</td>
</tr>
<tr>
<td style="font-family: Helvetica,Arial,sans-serif; font-size: 12px; color: #88898d;" class="columnCenterNormal">Jeanne Liedtka is a <br /> Professor of Management <br /> at the Darden Graduate <br /> School of Business at <br /> the University of Virginia.</td>
</tr>
<tr>
<td style="padding-top: 10px;" class="columnCenter"><a href="http://www.darden.virginia.edu/web/Faculty-Research/Directory/Full-time/Jeanne-M-Liedtka/" style="text-decoration: none;" target="_blank"><img src="images/btn-read-more.png" width="60" height="20" alt="Read More" border="0" /></a></td>
</tr>
</tbody>
</table>
</td>
<td width="169" valign="top" style="padding-top: 10px; padding-bottom: 20px;" class="column">
<table cellpadding="0" cellspacing="0" border="0" class="columnsNoPadding">
<tbody>
<tr>
<td class="columnCenter"><a href="http://www.amazon.com/The-Catalyst-Become-Extraordinary-Growth/dp/1933199369" style="text-decoration: none;" target="_blank"><img src="images/content-col-2.png" width="130" height="130" alt="The Catalyst" border="0" style="display: block;" /></a></td>
</tr>
<tr>
<td style="font-family: Helvetica,Arial,sans-serif; font-size: 16px; color: #519eba; font-weight: bold; padding-top: 15px; padding-bottom: 10px;" class="columnCenterNormal">About the Book</td>
</tr>
<tr>
<td style="font-family: Helvetica,Arial,sans-serif; font-size: 12px; color: #88898d;" class="columnCenterNormal"><i>The Catalyst: How You Can Lead Extraordinary Growth</i>, was named one of Business Week's best innovation and design books of 2009.</td>
</tr>
<tr>
<td style="padding-top: 10px;" class="columnCenter"><a href="http://www.amazon.com/The-Catalyst-Become-Extraordinary-Growth/dp/1933199369" style="text-decoration: none;" target="_blank"><img src="images/btn-read-more.png" width="60" height="20" alt="" border="0" /></a></td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</td>
<td width="2" valign="top" style="font-size: 1px; line-height: 1px;" class="eraseForMobile"><img src="images/sep.png" width="1" height="485" alt="" border="0" /></td>
<td width="200" valign="top" style="padding-top: 20px; padding-bottom: 20px; padding-left: 30px; padding-right: 15px;" class="column">
<table cellpadding="0" cellspacing="0" border="0" class="columnsNoPadding">
<tbody>
<tr>
<td class="columnCenter"><a href="http://www.invetech.com.au" style="text-decoration: none;" target="_blank"><img src="images/right-col.png" width="145" height="145" alt="Colin White, PhD, Invetech President" border="0" style="display: block;" /></a></td>
</tr>
<tr>
<td style="font-family: Helvetica,Arial,sans-serif; font-size: 13px; color: #6d6f72; padding-top: 15px; padding-bottom: 5px;" class="columnCenterNormal"><b>Executive Series</b> <br />Colin White, PhD<br /><em>President of Invetech</em></td>
</tr>
<tr>
<td style="font-family: Helvetica,Arial,sans-serif; font-size: 12px; color: #88898d; line-height: 18px;" class="columnCenterNormal">
This recorded discussion <br/>and article transcript <br/>represent the first in a <br/>series of quarterly <br/>conversations on the <br/>topic of leading <br/>corporate growth.</td>
</tr>
</tbody>
</table>
<table align="center" cellpadding="0" cellspacing="0" border="0">
<tbody>
<tr>
<td width="156" colspan="2" style="font-family: Helvetica,Arial,sans-serif; font-size: 13px; color: #747578; font-weight: bold; padding-top: 25px; padding-bottom: 10px;">Recorded Interview:</td>
</tr>
<tr>
<td align="center" valign="top" style="padding-right: 10px;"><a href="http://www.invetech.us/newsroom/viewpoints/growth-through-leadership/audio/" style="text-decoration: none;" target="_blank"><img src="images/ico-01.png" width="30" height="30" alt="" border="0" /></a></td>
<td style="font-family: Helvetica,Arial,sans-serif; font-size: 12px; color: #747578; line-height: 18px; padding-bottom: 10px;">Colin White with <br /> Jeanne Liedtka <br /> <a href="http://www.invetech.us/newsroom/viewpoints/growth-through-leadership/audio/" style="color: #c91b4c; font-weight: bold;" target="_blank">Listen to the Conversation</a></td>
</tr>
</tbody>
</table>
<table align="center" cellpadding="0" cellspacing="0" border="0">
<tbody>
<tr>
<td width="156" colspan="2" style="font-family: Helvetica,Arial,sans-serif; font-size: 13px; color: #747578; font-weight: bold; padding-top: 25px; padding-bottom: 10px;">Interview Transcription:</td>
</tr>
<tr>
<td align="center" valign="top" style="padding-right: 10px;"><a href="http://www.invetech.us/newsroom/viewpoints/growth-through-leadership/" style="text-decoration: none;" target="_blank"><img src="images/ico-02.png" width="30" height="30" alt="" border="0" /></a></td>
<td style="font-family: Helvetica,Arial,sans-serif; font-size: 12px; color: #747578; line-height: 18px; padding-bottom: 10px;">Conversation <br /> Highlights <br /> <a href="http://www.invetech.us/newsroom/viewpoints/growth-through-leadership/" style="color: #c91b4c; font-weight: bold;" target="_blank">Read the Conversation Transcript</a></td>
</tr>
</tbody>
</table>
<table align="center" cellpadding="0" cellspacing="0" border="0">
<tbody>
<tr>
<td width="156" colspan="2" style="font-family: Helvetica,Arial,sans-serif; font-size: 13px; color: #747578; font-weight: bold; padding-top: 25px; padding-bottom: 10px;">The Catalyst Primer:</td>
</tr>
<tr>
<td align="center" valign="top" style="padding-right: 10px;"><a href="http://www.darden.virginia.edu/web/uploadedFiles/Darden/Executive_Education/Catalyst%20article_100410.pdf" style="text-decoration: none;" target="_blank"><img src="images/ico-03.png" width="30" height="30" alt="" border="0" /></a></td>
<td style="font-family: Helvetica,Arial,sans-serif; font-size: 12px; color: #747578; line-height: 18px; padding-bottom: 10px;"><i>6 Lessons to <br /> Unleash Your <br /> Inner Catalyst</i> <br /> <a href="http://www.darden.virginia.edu/web/uploadedFiles/Darden/Executive_Education/Catalyst%20article_100410.pdf" style="color: #c91b4c; font-weight: bold;" target="_blank">Download PDF</a></td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
<table bgcolor="#fafafa" align="center" cellpadding="0" cellspacing="0" border="0" class="columns" style="width: 570px;">
<tbody>
<tr>
<td class="column">
<table align="center" cellpadding="0" cellspacing="0" border="0" class="columns" style="width: 540px;">
<tbody>
<tr>
<td style="font-family: Helvetica,Arial,sans-serif; font-size: 12px; color: #b3b4b6; padding-top: 20px; padding-bottom: 30px; border-top: 1px solid #dddddd;" class="columnCenterNormal"><span class="newLineMobile">Copyright © 2014</span> {{Account.COMPANY}}, <span class="newLineMobile">All Rights Reserved </span><br /> {{Account.BIZ_ADDRESS}} <br /><br /> <span class="newLineMobile"><a href="http://action.invetech.us/acton/rif/{{Env.AccountId}}/{{Env.MsgId}}/-/{{Env.RecId}}/{{Env.SrcId}}/zout" style="color: #b3b4b6; text-decoration: none;" target="_blank">unsubscribe from list</a></span></td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>