Zach Galifianakis is to join the cast of Jay Roach's 'Dinner For Schmucks', the Hangover star will be a part of an ensemble cast that includes Steve Carrell and Paul Rudd.Galifianakis will play an assistant manager of a mattress store who is dating Carell's charachters ex-wife.
Production for Dinner For Schmucks will begin this autumn with a summer 2010 release date.
