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Comic-Con 2011 Tile

You hear that a lot at Comic-Con, but in Zachary Levi's case he's kidding.

How do we know? The star of NBC's Chuck was putting his good name (and much of his voice, too) toward helping the charity Conversations for a Cause, which raised thousands of dollars at the convention. Watch and find out how!

Check out more from the Syfy/E! Comic-Con Party hosted by E!'s Ben Lyons and Syfy's Jael de Pardo, plus watch the Cowboys & Aliens world premiere coverage at Comic-Con! Catch it all here!