Alternatives to the DualShock for PS3?

Im not the biggest fan of the DS3 Controller, I prefer the X360's over it anyday

So I was wondering if there are alternative controllers/Keyboards+Mice that can be used on the PS3?
I kow it supports Gamewheels and joysticks, Im talking about gamepads like the Dualshock

Cheers

There are some optional ones, but i like the DS3 the best