I'm still playing COD4 on PS3. And Gran Turismo 5P. I bought GTA IV a while ago, and even that couldn't stop me playing COD4. I still play lots of SNES games on my GP2X. The 90s were the golden years of gaming (for me anyway), so many of those old SNES games are still in my top 20 favourite games.
Diablo 2 and looking forward to 3. I was a master of William's Joust with a buddy back in the day as well. I could turn the machine back to board 1 but then it just would get harder yet boring.
Dungeon Keeper 2 Waiting for the 3rd one to be released, but that has been like several years. I hope Bullfrog hasn't given up on it.