Gotta be the atari 2600. I played that baseball game soooo much with my father, where the fall was just one big fat pixel. Oh, and breakout (which had amazing pics on the cartidge cover, but again, but single pixel ball, with 10 pixel blocks).

Then commodore 64, played BigMac, Spyhunter (oh yeah), and loderunner for a while.
Then an XT, pitfall, digdug, jumpman, etc. --> P4 now....
Lastly, the \'good\' consoles really started with SMS (ghostbusters mostly), NES (so many - ice hockey, metroid, supermario, zelda) --> PS2 now....