I was just about to make an "R6: Vegas > Gears" thread when I saw this one. For real, duder. This is gun porn. The weapons are so loud and violent and just feel real. The AI is very smart and makes for great opponents. I'm in love.
Sneaking up behind someone, screwing on your silencer then leaving a blood splotch on the wall behind them with a click of your assault rifle is pure fuckin' sex. Not regular old twice a week missionary sex with the wife, but like a hot girl at the bar sticks her tongue in your ear, whispers that she isn't wearing any panties and asks if you want to leave with her. Like that but with assault rifles. And I'm not some Soldier of Fortune readin' Montana Libertarian, either.