Hmm, what FPS games have I played this gen? Let's see...
MW
MW2
CoD WaW
Bioshock
Bioshock 2
Halo 3
Halo 3 ODST
Halo Reach
CoDBlOps
Battlefield 3
Bad Company
Bad Company 2
Half-Life 2 (does that count?)
HL2 Episode 1
HL2 Episode 2
Rage
Resistance
Resistance 2
Bulletstorm
DE:HR
Borderlands
DNF
More than I thought. Of those, in no particular order...
Bad Company
Bulletstorm
Modern Warfare
Borderlands
HL2 (plus episodes)
Battlefield 3
DE:HR
Halo 3
Bioshock
Bioshock 2
--
Hold my money, Pockets too heavy,
Ninja Turtle Swag, Bebop Rocksteady