Aside from the (admittedly considerable) appeal of watching Robert Downey Jr. crack wise as billionaire genius-turned-superhero Tony Stark, perhaps the biggest lure of Marvel's Iron Man movies is finding out just what kind of amazing toys and gadgets he's built into the latest version of his high-tech armor this time around. Although such innovations as a costume that unfolds itself from a suitcase onto your body (Iron Man 2's "Mark V" armor) or clothes that follow you around when you wear special bracelets (Marvel's The Avengers's Mark VII armor) remain the stuff of science fiction, a surprising amount of the tech on display in the Iron Man mythos has counterparts in our world, even if the reality is a bit less colorful and unlikely to help us in the case of a Chitauri invasion.