The Avengers

Before "Marvel's The Avengers" premieres May 4, here's a superior super-hero mash-up to remind you of its predecessors and help you to judge whether the upcoming genre-fest will be "the best super hero movie of all time."  Glossing over 182 films by our count, this Sleepy Skunk production also has a fantastically detailed roster in the description that catalogues the featured films.