SNES Street Fighter II - cheat HELP!!!

[Luco]

Any Mario is win
Secret of Mana / Chrono Trigger / Zelda LttP if you like rpgs
Any Donkey Kong Country
Earthworm Jim (of course)
Killer Instinct
NBA Jam: Tournament Edition
Contra
R-type
F-Zero
Mortal Kombat II or III

I'm sure I'm missing a really obvious one, will have a think and post back

Also, SF is never wasted time. Ever.