Best/Worst Fighting Game Idea Ever

Alright, I was going to go to bed, but then I thought of this awesome thing, so I decided to write it down before I forget. In the grand tradition of Marvel vs Capcom and Tatsunoko vs Capcom, I give you: Atlus vs Capcom!

Now before you write me off as a raving, sleep-deprived lunatic, think of the possibilities. The main characters of Persona 3 and 4 could be like Ryu and Ken, both fighting with one handed swords, and using their Persona for special moves (Orpheus and Izanagi). Add this with your Persona 3 and 4 buds (Funky Student/Fox anyone?) and you already have a decent roster. Then throw in some guys from Disgaea and Prinny, the dude from SMT Devil Summoner and someone from....Riviera(?) and you are starting to have a stupidly big roster (Marvel vs Capcom 2 style).

See? I'm not crazy! Shove in some air combos while you are at it!

Kasumi Ninja vs. Capcom.

Persona Vs Pokemon. Especially if they mix and match characters and methods of summoning (Yukiko tossing a Pokeball and shouting "Konohana Sakuya, I choose you!", Ash blasting himself in the head with an Evoker, etc)
And while I'm mashing genres, can somebody please make a strategy role-playing football game? And a Rocky Horror Show-licensed dating sim. Thanks.

Giantbomb vs Atlus.

Shaq Fu vs Rise of the Robots vs Ballz 3D.

chuck norris vs rapelay

Tekken vs SF. Oh yeah!

Why are they all Vs. games? What about Mortal Kooperation? Street Resolver? Turn Based Battle? Those are all horrible ideas :P.

Capcom vs World of Warcraft. 

If you choose to play a character selected from the World of Warcraft side, you can only use a mouse and keyboard to control your team.  The upside is that while Capcom teams are limited to three players, WOW teams run at 5, 10 and 25 man rosters.  By playing the game, you can earn unlockable outfits for your Capcom characters or awesome gear for your WOW team however if no one in you team can use the reward it's sharded for cash.  Eventally, you will have the option of paying a Chinese service to earn all 1000 gamer points/trophies for you at a very reasonable price.  Honest.

• Tree
• Desk
• Rock
• Chair
• Anvil
• Pair of Pants

The worst idea for a fighting game was Street Fighter: The Movie: The Game. Seriously, how do you make a fighting game based on a movie that was based on a fighting game?

Absolutely ridiculous.

Rock Band vs. Guitar Hero vs. Rock Revolution