To supply 1 my name doesn't already state, Kid Chameleon. Sonic 2 is up there, but I always wish there were 3 acts a stage.
Shinobi III is the only video game I need, everything else can go.
Definitely Flashback. I have probably played all the way through this game more than any other. Doesn't matter if it's the cart or CD, they both rock!
Shining Force II
Thunder Force IV, Sonic CD, and Knuckles Chaotix