The Xbox 360 controller's already pretty great for FPS gaming as long as you can get over your mouse and keyboard indoctrination, but one modder has removed all the face buttons from the front of his 360 controller, instead shifting them to the back, in a curiously specific operation somewhat similar to surgically shifting your girlfriend's breasts to her back for better dancing.
I'm not entirely convinced: where's the D-pad, which is usually used by shooters for things like hotkeys and weapon selection? And I can't get over the fact that the default 360 pad works just fine. If there was one thing I'd change about it? The upper shoulder buttons are practically impossible to click simultaneously with the lower triggers, which means I can't shoot properly in GTA IV while driving, which means I suck. Grr. Get on that, Microsoft.