Sure, the attractive cast of 'The Avengers' (led by Robert Downey Jr., Scarlett Johansson, Chris Hemsworth and Chris Evans) made the film's first trailer extra sexy, but you know what didn't hurt? The use of appropriately named (and totally awesome) 'We're in This Together' by Nine Inch Nails. In fact, some of the coolest trailers in recent years have been set to songs by NIN. Ahead, five movies made sexier (or a whole lot scarier) by some killer NIN tunage.