In BF3, no, but in Red Faction Guerrilla, yes.
Playing around with a friend in the map Rift during a team anarchy/death match game. I decided that I didn't quite feel like doing anything but try and get in a few head shots. So I grab a jet pack, an Enforcer, an Arc Welder, and a Sniper rifle and fly of to the dark side of the map. Took up a position on top of the only tall round building and just waited. Two head shots later and I was still siting undisturbed, that was until I saw someone flying around on the other side of the map shooting at my friend. Line up a shot, take it, and boom, one kill from the entire map away. Granted that anyone who plays that map knows how small it is, but still it was great.
Another more recent one happened in MAG during an Acquisition game. Parachuted in after getting my soldiery self blow to bits by a grenade, and what do I see. I see an enemy bunker sitting only a short distance away. So me and two other people move on it, one of them plants the bomb to blow it up, next thing we know the enemy is swarming out of the bunker trying to defuse the bomb. We hold them of until the bomb is just about to blow, and right before it does, I jump from the area it was on to a lower area. As I land the bunker goes sky high, and I walk away thinking about how great I must look now.
