Well not sure how modern you want, but here are a few:
Doom 3, F.E.A.R., Killing Floor, Left 4 Dead 1&2, DayZ (still in Alpha), Resident Evil (many), Dark Souls (never played it), Dead Space (1/2/3), Metro (2033, Last Light), S.T.A.L.K.E.R. (all of them).
Those are a few I can think of. Most of them I've played.
There are also supposed to be a few good ones coming out this year.