Justin Theroux

Character: Jan Jürgen

Steve Coogan

Character: Damien Cockburn

Robert Downey Jr.

Character: Kirk Lazarus

Ben Stiller

Character: Tugg Speedman

Jack Black

Character: Jeff Portnoy

Bill Hader

Character: Rob Slolom

Nick Nolte

Character: Four Leaf Tayback

Jimmy Rich

Character: Drake 'The Stick' Longwood

Jay Baruchel

Character: Kevin Sandusky

Brandon T. Jackson

Character: Alpa Cino

Janeane Garofalo

Character: Heidi Bivens

Tom Cruise

Character: Les Grossman