Recently : Battlefield Heroes, Demigod, NHL10, L4D 1-2.
Notably, in the past : Final Fantasy 7-8-9-10-12...
All those games I was really enjoying, but whenever I end up not having time to play a game for a while, I lose interest/track of my progress and just plain stop playing.
Dragon Age, if I don't play it again really soon, will suffer the same fate.
On a positive note, I picked up FF8 again, after years of it sitting on a shelf. I'll go all the way this time, I promise. I seriously can't remember what was the last game I finished, besides Neverwinter Nights (and expansions).