Years ago I played DnD, Gamma World, and Star Wars (with SW being the most recent).
I just picked up TWERPS, and my fiancee and I decided to put together a zombie RPG, using the Mythic rules so we don't need a GM. I like Twerps because we can throw PC's and NPC's together quickly and focus on what's going on, and I like Mythic because you can play without a GM.
Classic Marvel Super Heroes RPG. Best there is. I have a website for gaming material, a mediafire page with tons of things to download, and still play in online games and am working on starting a game of my own to run.
I haven't played any role-playing games since the late-90's, But fresh out of high school my friends and I played a LOT! GURPS was my favorite, but I also played AD&D, Vampire, Werewolf, Twerps, RiFTs, Palladium's Super-Heroes, and ShadowRun.
Have played and ran D&D since 1990, and not stopping anytime soon, even got my wife playing it. Have also played Vampire, Cyberpunk, d20 Modern and Star Wars. COTG and D&D have been my main games though, both since 1990.