Here are ten or so more ideas that i'm allowing anyone to use just to throw out there. I tried to pick a lot of games that most people would've not thought of, using more of a variety of game play.
SOME MORE IDEAS OPEN FOR PUBLIC USE THAT I DONT PLAN TO USE:
1. super mario world - mario vs bowser
2. starfox - fox vs andross (the reflecty face dude that spits mirrors at you)
3. donkey kong country 2 - diddy and dixie vs k. rool (and his cannons that can give you reverse control and stuff)
4. super mario rpg - mario + mallow + geno (the best characters :P ) vs ANY BOSS IS GOOD - to name a few: culix, bundt (the cake), booster (and have him say gay jokes during the battle), belome (dog with tongue), axem rangers, or smithy with his multiple forms
5. mike tyson's punchout type game
6. diablo - character (of choice) vs diablo himself
7. mortal kombat - character vs goro (four arms)
8. phantasy star - characters vs dark falz
9. ALIEN HOMINID - alien hominid vs the soviet union robot
10. chrono trigger (snes vers.) - chrono and party vs any boss (last one, even >_> )
Alright, there's some ideas for those of you with none. If you have an idea use yours though! (Even though mine may be better ^_^ )