NES: Track and Field on the Power Pad. Awesome. 
Genesis: Sonic the Hedgehog 2, and the start of my love affair.
Game Boy: Pokemon Red, Missingno., and Rare Candies. 
SNES: Being blown away from the "massive" (compared to Sonic) world of Super Mario World.
PS1: Every time I would go over to my friends house, we'd rent and play Resident Evil 3. STAAARS!
N64: Super Mario 64's castle grounds. Running around aimlessly had never been so fun.
Gameboy Advance: Instead of a copy of Castlevania: Circle of the Moon, the box contained 2 packets of Taco Bell hot sauce. 
PS2: I'd watch my friend play Metal Gear Solid 2. And after that we'd play The Adventures of Cookies & Cream...
Xbox: Halo battles. I was never any good. That is, until I found the shotgun. ^_^
GameCube: The first time I took control of the legendary bounty hunter Samus Aran. Never looked back. Oh, and visiting Hyrule Temple for the first time in the Wind Waker... amazing.
