Delta force: Black hawk down for PS2. (not to be confused with team sabre, which sucked dick)
Americas army 3 and 2
Every single VALVe game.
S.T.A.L.K.E.R. Shadow of Chernobyl and Call of Pripyat
Fallout before it got first person-ified and even when it did, to a lesser extend.
You can tell i like FPSs mostly.