In the crazy, mixed up world of Hollywood, some pretty weird ideas get taken very seriously. From improbable sequels to early versions of classic movies, these 10 bizarre projects were very nearly a reality. We'll let you decide if it was good or bad that they never happened.1. TMNT: The Last MutationAfter three films of pizza-eating, ninja-fighting action, the turtles took a break from the big screen for more than 10 years. In the meantime they appeared on TV in The Next Mutation, and that show has its roots in a planned fourth entry in the Ninja Turtles series.