Not sure of the title yet, but it would follow some people who are at the reading of the will for an old rich dead guy. He's a bit...odd, as can be seen from the people assembled. (maids, butlers, cooks, hot dog vendors, family, friends, that dud who's got the really silly name in the phonebook, the person who lives on exactly the geographic coordinates of my Social Security number...)
And a few people are saved for the very end of the reading, with the others dissmissed during the reading. These people get a "fictional" item that the beloved old dead guy has seen fit to leave them. So, you might get the Sonic Screwdriver from Doctor Who, allowing you to hack computers and open locks by pointing at them. Trouble is, that means that the villains of Doctor Who are coming into our world.
This would result in such things as the Cybermen getting mowed down by the BFG, The Gravity Gun being used against Ghouls, or an
ANIMa fighting an Angel with the help of EVA01.
I think I might limit it to small vehicles and things one person can carry, though, as despite mecha fights being hella cool, it would suck to have your town blow up. Instead, I'll be going for the rules of the real world being replaced by fictional world rules, thereby allowing successful use of a closed 30 story window as an emergency exit, under circumstances that are sufficiently awesome.
Certain NPC's will be player-controllable.
Thoughts? Responses? Ideas?