The Magical Quest for the SNES. A pretty decent Capcom platformer featuring Mickey Mouse where you can change into different outfits. It's really easy but still very fun.
Also recently: ESWAT for Genesis(fun little Rolling Thunder/Shinobi clone), TRUXTON(awesome Sh'mup with a great soundtrack) and Chrono Trigger, which i have owned about 4 times, but I keep selling it and buying it back. I think I'll keep it this time since it and a lot of other SNES games seem to be skyrocketing in value recently.