Good game?

I'm looking for a good game, probably a first person shooter, to keep me busy until BC2 comes out. any ideas are welcome.

What games have you got at the moment, so we know what not to recommend? Also, which ones did you like/not like - again should help people recommend.

Batman Arkham Asylum I absolutely loved and thoroughly recommend. Not a FPS, but seriously brilliant.

Bioshock - will lose every spare second you can spare it for the time it takes you to complete it. Amazingly looking and captivating story.

UT3 - great for pick up, blast for half hour, put down times.

COD4:MW - Looks good, and I personally loved the storyline. My step-kids live for the on-line play.

COD:MW2 - Same as above, but a little better in every respect (single player at least).

Race Driver Grid - if you fancy a good driving game I haven't found better.

Burnout Paradise - if you fancy a fun driving game I haven't found better.

Left 4 Dead - seriously fun, although most reviews say L4D2 is better and should be the one to buy, but haven't got that so cannot confirm.

Crysis - if your PC is up to playing it, I personally like it. Know some people didn't like the storyline though, but I do. Currently playing through it single player again.

Anway, just a few ideas to get you started from my limited experience.

JDV you need to get on man