Ben Stiller Tugg Speedman Director, Actor, Screenwriter, Producer Jack Black Jeff Portnoy Actor Robert Downey Jr. Kirk Lazarus Actor Nick Nolte Four Leaf Tayback Actor Steve Coogan Damien Cockburn Actor Jay Baruchel Kevin Sandusky Actor Danny McBride Cody Actor Brandon T. Jackson Alpa Chino Actor Bill Hader Studio Executive Rob Slolom Actor Brandon Soo Hoo Tran Actor Reggie Lee Byong Actor Trieu Tran Tru Actor Matthew McConaughey Rick Peck Actor Tom Cruise Lee Grossman Actor Justin Theroux Screenwriter, Executive Producer Etan Cohen Screenwriter Stuart Cornfeld Producer Eric McLeod Producer Theodore Shapiro Original Music Greg Hayden Film Editing John Toll Cinematographer Jeff Mann Production Design Marlene Stewart Costume Design Francine Maisler Casting Kathy Driscoll Casting Richard L. Johnson Art Director Daniel B. Clancy Set Decoration