I've OC'ed almost everything I own, including my wireless mouse. I normally don't. My desktop makes lead look unstable, and I like that. Sure, I could eke a few more FPS out of this beast... but that'a few more FPS. Nah, I'll upgrade first. And, like I said, this thing's a frickin' rock...
Oh, wait, the Ram's oc'ed, and the FSB is oced. I forgot about that. :P.
Still, I generally don't.... much.
--Chris