Amstrad of some sort or another. Ancient, loaded from cassettes.
BBC Micro (Parent's, but I used it occasionally)
Master System
Genesis/Mega Drive, Mega Drive II
Saturn
Dreamcast
N64 (Now broken ;_; )
PS
PS2 (Had PAL, now NTSC)
Game Gear
X-Box
GameCube (Had PAL, soon to be an NTSC GC)
GameBoy
GameBoy Color

No particular order, and I don't have any of the handhelds anymore.