Inspired by Thor, my 4 year old son has announced the first two films he'll direct. The first movie will be called Creatures of Dino Dan: Marvel vs. Capcom 10, and will star Dino Dan (a dinosaur-man creature he invented), as well as Godzilla, the Stay-Puft Marshmallow Man from Ghostbusters, the Ghostbusters themselves, Thor, Green Lantern, Iron Man, Og (Which calls Joker when he becomes a giant after ingesting Bane's venom drug) and Captain America.
He said after that movie he and his preschool friends, who will help him make his films, he will make Dawn of Dino Dan: Marvel vs. Capcom 10, which I assume will be a prequel, and will star "all the same guys." He said no girls other than his mother will be allowed to watch the movies, because they would have nightmares for months and months.
Don't expect these movies to hit theaters for a while, if for no other reason than all the time it will take to work out all the intellectual property rights involved with the characters.