I bet we do in some circumstances, but if the US military gets caught all of the bleeding hearts start screaming. Hell they think its torture if someone has to have underwear on their head.
I actually think the whole reasoning behind us not torturing them (besides all of the international laws and crap) is that we should be better than that. I say screw that.. torture and terror is a language they understand, so let's use it with them. An agonizing horrible death might make them think twice about the appeal of their 70 virgins or whatever.