Directed by Todd Phillips Produced by Todd Phillips Daniel Goldberg Susan Downey Screenplay by Alan R. Cohen Alan Freedland Adam Sztykiel Todd Phillips Story by Alan R. Cohen Alan Freedland Starring Robert Downey, Jr. Zach Galifianakis Michelle Monaghan Jamie Foxx Music by Christophe Beck Cinematography Lawrence Sher Editing by Debra Neil-Fisher Studio Legendary Pictures Green Hat Films Distributed by Warner Bros. Release date(s) October 31, 2010 (Night Visions Film Festival) November 5, 2010 (United States) Country United States Language English Budget US$65 million Gross revenue US$173,564,000