Let's keep things on topic folks. 
For me I currently have no time and play no games but here is a brief list of the games I have played. (There are many omissions)
D&D (Basic, adventure game, 2e, 3e, 3.5e)
Marvel Superheroes
Shadowrun (2 and 3e)
Call of Cthulthu (d20 and Chaosium
[7th ed I think?])
Star Wars (pre-d20)
Alternity
GURPS (Cyberpunk, Fantasy, uh.. About 20 other worldbooks that are a sleep deprived haze)
Rifts (see GURPS)
World of Darkness (Vampire, Mage, etc.)
Lots of other stuff I can't really recall at the time.