No shit? Hell, I'll admit it still has some RPG elements, but so did BioShock. And I love hearing RPG players call FPS games stupid when their skill-less and usually boring games are so bad, I'm surprised even one person can get addicted to them, I'm reffering of course, to WoW. I'm terrible at FPS games, I'll admit it, but at least they aren't grind, grind, grind, online social relationships, and some more grind for good measure.
If you really are thick enough to think Fallout 3 isn't mostly FPS, then I guess I'd throw my vote in for CoD4 or possibly Quake 4.