The first Assassin's Creed. I think it's kind of a sad commentary on the state of gaming that this supposed game sold so well. Graphically it would have been impressive for it's time, and the cities are cool enough. But the gameplay and combat itself? You may as well just have an "autopilot" mode so you don't need to actually do anything other than just watch the game unfold. Maybe I'm missing something, I'm only maybe two hours in, but it seems like the most incredibly shallow game ever made. I dunno, maybe it would translate better on a console or even a 360 controller on my PC, as opposed to keyboard and mouse.
Maybe I'm just jaded because the game I played previous to that was Crysis 2, which also may as well have been a moderately interactive movie.
I'm also occasionally putting 20 minutes in to Dragon Age Origins here and there. It just hasn't grabbed me the way the BG games did. I don't get bored when I'm playing it, but I don't really feel any strong urge to pick it up back up again if I haven't played it for awhile. I also installed Europa Universalis a few nights ago, and managed about 5 minutes of the tutorial before I realized I didn't have 3 hours set aside. I can tell that one's going to be a huge time commitment. Looks extremely intriguing though.