goldeneye is the best fps ever
golden eye for N64
HL2, COD, and UT2004 are the best fps's imo.
Halo Series, Half-Life Series, BF1942
Battlefield Series, CoD:UO, CS, CS:S
Well, I love all the usuals, but I got to admit I really want to play the new Russian one ;) http://articles.filefront.com/Hellforces_Interview/;364;;;/article.html
The best FPS's are Doom (Origional), Half Life, Half Life 2, Quake 1, Quake 2, Doom 3 (graphic wise), and Far Cry.
BF 1942 (desert combat mod), America's Army, Unreal Tournament, and Call of Duty are my favorites.