I played Need for speed Most wanted 2007 3 times, and I'm planning to play it again once I have time for it, it's not that special of a game but I love playing it laying down, feels so "free", I played Hitman Blood money twice, I like how you can finish the level in your own style, and of course cs 1.6 I finished all the grounds tens of times.
I keep replaying Gothic, it's an old RPG from 2000's. I played it for like 10 times or so. The atmosphere is great. You're a convict thrown into the barrier trying to survive the hostile medieval environment.