You can also do this in video games, apparently.
"No! Not Charlie the Suicide Bomber! He's retiring tomorrow, you monster!"
In Splinter Cell, it's impossible to progress through the game without snatching several unwitting guards from the shadows and forcing them to give up information, open doors, ward off attacks, or simply allow you to smell their necks. Meanwhile, in Call Of Duty: Black Ops, you're told to board a boat, snatch an enemy soldier, and use their gun to wipe out his fellows, safe in the knowledge that your new human sweater is absorbing every bullet fired at you. There was probably a less dickish way of doing this, but that wouldn't have looked so f*****g awesome ...
Your friend seems to be enjoying it a little too much.