Before people start relating Call Of Duty as the only type of FPS, remember that's it's just a war game. Same as Battlefield. There are lot's of different FPS out there. The best ones imo are Bioshock and Crysis.
If you're talking shooters in general, TPS (third person shooter) are better than ever. You have dead space, mass effect and vanquish etc that step all over older TPS games