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Greg Giraldo's colleagues mourn on Twitter

<div class="meta "><span class="caption-text ">Sarah Silverman wrote on her  official Twitter page, &#39;RIP Greg Giraldo. Belly-laugh hilarious, prolific, good & kind. A thousand oys can&#39;t express.&#39; (Photo courtesy of Sarah Silverman&#39;s official Facebook page: Facebook.com&#47;The-Sarah-Silverman-Program)</span></div>
November 11, 2010 7:04:13 PM PST