Super Metroid
Link to the Past
If you only play two games...these two. Best SNES games IMO and perhaps some of the best games ever IMO.
Other worthy mentions
Donkey Kong Country 1,2,3
F-Zero
Super Mario Kart
Super Mario All Stars
Megaman X, X2, X3
Secret of Mana
Super Bomberman 1,2,3
Super Punch Out
Ys 3 Wanderers
I don't like turn based games if you can't tell...