A lot of the time I am that guy, normally in bad company 2 when I am being 'that sniper', you know the one sniper who can shoot your head from across the entire map while you are in a quad bike.
EDIT FOR EPICNESS: one time in bad company 2 I was able to tkae on the entire enemy team at the same time and kill them all. It was on the desert map with the bridge, I was on attack and only one m-com station was left, I went up the stairs on the construction sight and killed two guys with the xm8 smg, I then got killed. Medic instantly revived me and the medic got shot, I then took cover behind a wall, I came out of cover and shot a guy with the rocket launcher, stabbed the guy behind him through the smoke. Then I killed four guys with one round of the smg (three were head shots) and killed the last guy with my revolver(head shot) as he shot me with his sniper rifle. I died from the sniper shot but then my team destroyed the m-com station.