I'm getting into a bad habit of getting bored of games before I finish them. GTA 4, Assasins creed, little big planet, mario kart wii, mario galaxy have all fallen by the wayside.
Orange box was great though, if you count episode 1 and 2 as seperate from half life 2, then i completed 4 games with that.
Also well into Twilight Princess which I only picked up recently which I will definitely complete.