Something Sexy
Super Freak
It's actually easier with the Keyboard and mouse IMO. It's weird at first but you get use to it. I find that my aim is far more precise with the mouse.
I remember playing Fallout 3 on the Xbox 360 with the controller and then switching over to the PC, holy hell was it easier to play and the ingame combat with the keyboard and mouse was superbly better.
Oh, that and I didn't have that constant jerk in the graphics anymore. God I hate lag.
FPS is 1000x times better on PC because those games started with keyboard/mouse, you can get so much better precision with a mouse.