Shrek is a 2001 American computer-animated fantasy-comedy film produced by PDI/DreamWorks, released by DreamWorks Pictures, directed by Andrew Adamson and Vicky Jenson, featuring the voices of Mike Myers, Eddie Murphy, Cameron Diaz, and John Lithgow. It is loosely based on William Steig's 1990 fairy tale picture book Shrek!, and somewhat serves as a parody film, targeting other films adapted from numerous children's fantasies (mainly animated Disney films).