Who gets the last word in?

I just have a hell of a time finding one compatible with my system. I picked up an "axis pad" for unreal, but it's been hard finding games that supprot my controller. Is there like a universal controller that works well with most systems/games?
 
The best games are mouse/keyboard, but if you play action type stuff.... I use a Super Joybox (I think that's what it's called). It's a USB adapter for a PS2 controller. Works perfect.

EDIT: I know Joybox makes the same thing for Xbox and whatever the hell that new Nintendo is called too, if you have those.