While I've been a console gamer for years, PC gaming has slowly grown on me. That said, there are times I wonder if I wouldn't do a bit better at some of my favorite console games if I used a keyboard and mouse, rather than a controller. If you have a PS3 and some spare cash, you can solve that debate once and for all.
XFPS has a new adapter that you can hook into one of your USB ports which allows you to hook up a USB or even (gasp!) PS/2 keyboard and mouse. It will then map the buttons from the controller appropriately on your new peripherals.
I can't seem to find anything that says whether or not you'd be able to choose how the buttons were mapped, which would be a major concern. If you're interested though, you'll need to shell out an extra $99.