Lets see
Punch-Out!! (Only one of the series I've played, is an awesome game)
Super Smash Bros. Melee (Loved it, but I've fallen in love with Brawl more)
The Legend of Zelda: A Link to The Past (Played this as my first Zelda, still my favorite)
Super Mario World (My first Mario, the first game I beat 100%, still my favorite Mario)
Final Fantasy VII (My first Final Fantasy, now VIII is my favorite regular and Tactics is my favorite overall)
can't think of anymore off the top of my head, but I did get a SNES before owning an NES so I played a lot of games in their SNES form before playing their NES forms.
Currently dreaming of: DKC4 or Sonic the Hedgehog 4 (classic 2D platformers) for WiiWare, Smash Bros. for DSi, New Super Mario World for DSi, a Wii remake or true sequel of Final Fantasy Tactics.
One down, hopefully more awesomeness to come.
