Nes: Super Mario Bros.
Nintendo 64: Conker's Bad Fur Day, Banjo-Kazooie (Lot of hours each, I don't know witch is more)
Playstation: Chrono Cross
Gamecube: Wind Waker
GameBoy Advance: Banjo-Pilot (only game I have on the system
)
Xbox: Halo 2
Xbox 360: Oblivion
PC: Fallout 3
PSP: Puzzle Quest
DS: Chrono Trigger