Last Night's Parties: Ryan Phillippe, Andy Samberg, Sarah Silverman Hit YouTube Comedy Week, The Osbournes, Kathy Griffin Step Out For A Cause & More

YouTube Comedy Week "The Big Live Comedy Event"

Where: Culver Studios Who Was There: Sarah Silverman, Seth Rogen, Vince Vaughn, Reggie Watts, Jeffrey Ross, Tom Green, Andy Samberg, Ryan Phillippe, Pete Holmes, Hannibal Buress, Jorma Taccone, T-Pain, Grace Helbig, Milana Vayntrub, Brett Gelman, Riki Lindhome, Kate Mucucci, Christine Riccio, Akiva Schaffer, Eric Wareheim, Tim Heidecker, Zach Peacock, Blake Anderson, Adam DeVine. Andy Samberg, Jorma Taccone, Akiva Schaffer Ryan Phillippe, Jeffrey Ross Jenny Slate, KassemG, Seth Rogen, Sarah Silverman [Photos via]