I bought Battlefield 2 on a whim last month, and I enjoyed it so much that I bought the complete Battlefield 1942 collection about a week later. That may not count, though, because I played 1942 for a few hours once when it was still new. If it doesn't count, I'm not sure, because I've bought so many new games in the last year, very few of them in series I had prior experience with. If Christmas gifts count, it would probably be a tie between Sins of a Solar Empire and Galactic Civilizations II, both of which were excellent. If not, there are quite a few other games that I bought around the same time, but the only new IPs out of the bunch that I've gotten around to playing would be Left 4 Dead, Deus Ex, and Bushido Blade. I really liked the first one and the last one on that list, but Deus Ex was not what I was expecting. I can see why people like it, but I have yet to really get into it.