Guitar Hero: The Movie
I hope they make a movie for Guitar Hero someday. Steven Spielberg would direct it. Ashton Kutcher would play Axel Steel, John Goodman would be Lars Umelet (dunno if that's spelled correctly), Ron Pearlman would be Lou (Hellboy, anyone?). I haven't thought up the rest of the cast, but I'm sure the film makers would figure it out!
This has got to be the best idea ever!