Shadowrun
D&D
And mostly World of Darkness stuff - Vampire: the Masquerade, Kindred of the East, Mummy: the Whichever One Mummy Was
On the digital side:
Ultima (all through 6, including Underworld 1 but not Underworld 2 or the Worlds of Ultima spinoffs)
Final Fantasy (1, 3, 7, 12, 13<hurk>, Tactics, Adventure)
Dragon Warrior 1-4
Quest for Glory 1-3
Persona 3
Crystalis
Zelda 2 (yes it is)
Chrono Trigger
Quest 64<hurk again>
Folklore
I have a partially designed RPG as well called Scheherazade, but to keep moving forward with that I'd need to test its mechanics and playability with a group, and I'm not around people who get together to RP that much.