DC and Warner Bros have just caused comic book fans to say "Cowabunga" and "Holy Cow" after announcing that there will be a Batman vs Teenage Mutant Ninja Turtles movie. Thanks to Nickelodeon and Warner Bros animation the movie will mark the first time that the heroes will meet outside the comics because of a "transdimensional encounter." There's no release date for the animated film, but it will be available in late spring.