Well, since they give their two best games for each system, I'll give mine (that I've played). Let's see how it stacks up...
Genesis: Sonic & Knuckles (Sonic the Hedgehog 2)
SNES: Super Mario World (Super Metroid)
GameBoy: Pokemon Red (Pokemon Silver)
N64: The Legend of Zelda: Ocarina of Time (Banjo-Kazooie)
PlayStation: Crash Bandicoot (Resident Evil 3: Nemesis)
GameBoy Advance: Castlevania: Circle of the Moon (Mario & Luigi: SuperStar Saga)
GameCube: Metroid Prime (The Legend of Zelda: The Wind Waker)
PlayStation 2: Metal Gear Solid 3: Snake Eater (Guitar Hero II)
Xbox: Halo (Star Wars: Battlefront II)
DS: Castlevania: Dawn of Sorrow (Castlevania: Order of Ecclesia)
Wii: Super Mario Galaxy (The Legend of Zelda: Twilight Princess)
360: Bioshock (Left 4 Dead)
PC: WarCraft III: Reign of Chaos/The Frozen Throne (StarCraft)
