Pretty much any Spec Ops from any country. But the one that impressed me most was the Israeli Defence Force Commando the had on Fight Science. That guy is a bad @ss. In one of the tests they held him at gun point, to the face. He moved his head aside, stripped the gun, punched the guy in the head, and had the gun turn on him before he could even flinch. And in the shooting test, he was faster and more accurate after the put him on a tread mill in a plastic sweat suit and under heat lamps. It was nuts. The Seal was pretty good too. They froze him in a tank of ice water for his shooting/movement test.