I have an idea for an RPG.
The party is comrpised of tropey stock charcters from various movies who are being bounced to a different movie/genre at random. They have the crazy advantages: some are medium aware, cartoon animals have absurdly high hp and get bonuses from quips, creepy devil children have psionic powers, action heroes can't miss with their guns and have great damage resistance/dodge et al. Their goal is to figure out what kind of movie they are currently in (horror, goofy comedy, psychological thriller, erotica, action, western, zombie et al) and successfully play out/subvert its 'story' to escape to the next movie. Eventually they confront the source of all the jumping disturbance... but not before they hack/slash/joke/dance their way through innumerable worlds.
I guess I just want to see Bugs Bunny fighting off 28 days later's infected. Watch Predator era Arnold navigate the social faux pas Pride and Prejudice. Dark Helmet of space balls battling the forces of Sauron at the gate or Mordor. A character from village of the damned having to play matchmaker in a goofy Romantic Comedy.
Sliders meet your favorite characters and movies: the stuff we're already churning out in terabytes of crossover fan-fiction.