It's not like you really need a reason to watch a new Deus Ex: Human Revolution trailer. That said, if you want one, we've got you covered. At around 1:20, hero Adam Jensen snaps an enemy's neck, and by "snap," we mean ... well, let's not completely spoil it.
You play Adam Jensen, a security specialist, handpicked to oversee the defense of one of America's most experimental biotechnology firms. But when a black ops team uses a plan you designed to break in and kill the scientists you were hired to protect, everything you thought you knew about your job changes. At a time when scientific advancements are routinely turning athletes, soldiers and spies into super-enhanced beings, someone is working very hard to ensure mankind's evolution follows a particular path, and you need to discover why the decisions you take and the choices you make, will be the only things that can change it.