Grandma's Boy (2006) - Cast

Linda Cardellini as Samantha
Chuck Church as Dan
Frank Coraci as Cousin Steven
Allen Covert as Alex
Peter Dante as Dante
Heidi Hawking as Barry's love interest
Jonah Hill as Barry
Shane Houston as Video Gamer
Shirley Jones as Grace
Shirley Knight as Bea
Joe Koons as Best Man
Jonathan Loughran as Josh
Katherine Ann McGregor as Mrs. K
Joel Moore as J.P.
Kevin Nealon as Simon Cheezle