Amiga: Speedball 2, Worms, Populous 2
PC:
Star Wars: Knights of the Old Republic, 1 & 2
Half-Life 2 plus episodes
Starcraft, Starcraft 2
Tomb Raider 1, 2, and 4.
UFO Enemy Unknown (I've never seen it run well on the Amiga, plus the graphics were better on the PC).
N64: Goldeneye. Wipeout 64.
If I had to pick one out of all of these, KotoR 1 or 2 would be high on the list of possibilities.
