Sniper Ghost warrior contracts 2. Shooter, but the sniper stuff from a mile away is great, and gruesome as hell (enough for me not to post it here), which oddly relaxes me after a bad meeting at work (should I worry? ;-)
And Sturmovik IL2 - amazing (and hard) WW2 Flight sim - flying the Typhoon against the germans or the FW 190 Dora against the brits, fantastically well done. You can click every cockpit button and go as realistic as you wish with engine management, or not. Superb flight model and gunnery