A Super Hollywood Blockbuster Idea.
Neo from "Matrix" VS
Superman
from, well you know where. :)
And the action is in the surroundings of "Lord of the Rings"...
You've got it!
Famous Movie Heroes Battles. A better version is the team fights -
Harry Potter and his whole school VS
X-Men
Men in Black VS Starship Troopers :))
And always the battlescene from some third popular movie.
These kind of movies could be animated to save time.
Or maybe just a comic book as a start of a new cool and funny direction to save money and test the experience.
If done in a comedy style, I am sure it's a 100% success. The problem could be with clearing the copyrights though. But nothing is a problem if that's a success idea.
BTW, it was done already: remember, Alien VS Predator. (The movie wasn't good, IMHO.)
