I love racing games the most. Not games like nascar or anything, but tuner/modifying games. Need for Speed Underground was my all time favorite game when it came out. Games like Atv offroad fury are also my favorites.
I have a wide range in games I enjoy Battlefield, Ghost Recon, Assassins Creed (Favorite series), Final Fantasy (older ones like 7/8), Mortal Kombat, Guitar Hero, Borderlands, Maden NFL and more. Mainly I like RPG/Adventure and FPS though.