Modern Warfare 2 Multiplayer Trailer

An intensely shooty new trailer for Modern Warfare 2 has turned up, and I've posted it below. This one shows in-game footage from multiplayer, with its customisable killstreaks, and a glimpse of the AC-130 gunship. As aerial gun-platforms go, that's one of the best. I'm not really sure of the appeal of the killstreaks thing - are there any COD4 multiplayer types out there who can comment? Incidentally, it seems that Activision have added the "Call Of Duty" prefix back onto the game for launch, but we're not going to bother with it, because you guys probably know what we're talking about.