I was just surfing IGN and I saw an interesting controller that could make console FPS's more exciting. It's called the FragFX
The wii-nunchuck-looking half will have SIXAXIS control.
The part that gets me excited is the fact that the mouse will override the slow moving analog stick looking (when you move your gun in an FPS) and make it faster meaning you can play a PS3 FPS as if you were to play it on the PC.
Remember this design is only prototype and the final build matches the PS3's color.
There will be a wired model for 50$ and a wireless for 60$
I think it's a neat idea and I'd opt to play Resistance (or Killzone 2...heh) like a computer FPS anyday.