I was going to buy Call Of Duty the day before yesterday, but I got XIII instead. It's good, and the multiplayer is fun (reminiscent of GoldenEye, I thought), but I'm almost done with the single-player mode already, and I had to re-do a pretty good chunk of the missions this morning because I forgot to save yesterday.
I think I'll probably get Call Of Duty soon, too, unless it requires DirectX 9 (I can't get Beyond Good & Evil to work because it requires it and my video card doesn't have DX 9 drivers yet, nor is it likely to ever have them).
I finished the single player campaign and I had my first taste of online action just now and I really like the level designs, that's all I got to say for now. I finished with 9-8, not too shabby for a beginner.