Spectrum (48k, then +2A) - Chuckie Egg, various other games
Amiga (500 & 1200) - see the other thread
NES - Mario 3
SNES - Mario World, Mario Kart, Yoshi's Island, Mario AllStars
Master System - Wonderboy, Alex Kidd, can't remember much more
Mega Drive - Sonic
Atari Jaguar - Tempest 2000 & Alien vs Predator (the only decent games on the damn thing, lol)
Also had the slightly more recent Dreamcast & Nintendo 64, & currently have an XBox & a GC.
Oh, & various PCs through the years. Fave PC game probably Deus Ex 1. Also liked Freespace 1 & 2 a lot.