Walk Hard: The Dewey Cox Story:
In the tradition of great spoofy heroes like Ron Burgundy (Anchorman) and Ricky Bobby (Talladega Nights), comes Dewey Cox, starring the always-super John C Reilly. Jake Kasdan directs, but the fact that it is based on a Judd Apatow script is cause enough for celebration.
Walk Hard is a parody of the music biopic, of films like Walk The Line and Ray, and it's a genre that certainly deserves much tomfoolery. The cameos should also be a blast, with a hilarious leaked video showing Jack White as Elvis and Paul Rudd-Jack Black doing a Lennon/McCartney.