I got the Atari 2600 when I was 1. My parents played it more than I did at that time. I only had a few games for it, but the original Pac Man was by far the most awesome game ever.
For the NES, SMB and SMB 3 were my favorite games. SMB 2 was crap - in Japan, it wasn't even a Mario game. The US version had the Mario characters inserted. It sucked.
For the SNES, Super Mario World and Mario Kart are 2 of the classic games.
I was always really into video games - there weren't kids to play with in my neighborhood, so I learned how to entertain myself with them. I still pull out the NES and SNES and play. To make things worse, I've worked in a video game store for 3 summers
Hm...maybe I'll hook up the n64 and go play some...