i think the first and last FPS game for me is Wolfenstein 3D.. i just dont like the idea of having a gun sticking on your screen while walking/running around...

but viola! when i start playing Call of Duty 2, it got my attention and now addicted to the game... can't wait to play the COD3 sequel after i finished the single-player campaign on my 360

... and COD2 has nice achievements though