Greg Giraldo's colleagues mourn on Twitter

Slideshow posted in Entertainment News | Wednesday, September 29, 2010

1 of 11: Sarah Silverman wrote on her official Twitter page, 'RIP Greg Giraldo. Belly-laugh hilarious, prolific, good & kind. A thousand oys can't express.' (Photo courtesy of Sarah Silverman's official Facebook page: Facebook.com/The-Sarah-Silverman-Program)