If you're a hardcore PC gamer, you know that you can't just use a normal keyboard and mouse if you really want to go to town on all those N00bs out there. No, you need some special equipment. And there isn't much equipment more special than the Razer Nostromo.
This crazy thing is a special gaming keypad with 16 programmable keys. You use it in place of a normal keyboard, and it's shaped like a weirdo mouse, so you'd have something similarly shaped in both hands. It all makes a lot of sense to me, but I'm a console gamer, so take my word with a grain of salt.