I've owned (only ones I don't still own are the Genesis and Virtual Boy)-
NES, SNES, Genesis, Virtual Boy, PS1, N64, PS2, GameCube, Wii, 360
As far as handhelds go (No longer own the GameGear or the original GBA)-
Game Boy, Game Boy Color, Game Gear, Game Boy Advance, Game Boy Advance SP, DSlite.