Bio-mechanical Enhancement of the Human Body: What would you get?

If you could get any mechanical enhancement to your body, what would it be? This is, of course, assuming that you can trust the technicians and surgeons involved to not install spyware in your brain or somesuch.

Would it be a resonator that can induce LSD-like states of accelerated awareness? Some other device that enhances brain functioning? An endoskeleton of the hardest alloy? A third or replacement eye capable of seeing a greater portion of the electromagnetic spectrum, or even the whole damn thing, complete with zoom and image capture functions? A wi-fi chip that allows you to communicate telepathically, and/or connect to the internet via satellite? Nanomachines that replace one's white blood cells as the primary defenders of the body, and can also heal wounds almost as fast as Wolverine?

C'mon, these ideas are just to get you on the right track. In an anything-is-possible world, what Borg-like enhancement would YOU get? Hmmmmmmmmm?

:borg:

I think I would install self-reproducing nanomachines in my brain to enhance processing speed and storage space. Not only would they act in tandem with my existing neural network, they'd also have roughly 50MB of storage per nanite, giving me a vast and ever-expanding storage space that is completely independant of my nerual processes. I'd also install a couple of USB ports behind each ear, or maybe at the base of my skull. Not only would I now be able to smuggle and courier data, Johnny Mnemonic-style, and store all my junk on an uncrashable hard drive, I'd also be able to interface directly with any computer, giving me the ability to whup both n00bs AND those possessing m4d ski11z in any game, play music with the utmost precision, and code at a sub-sonic rate.

Also, it leaves me open for quick upgrades, like a retinal projector (projects an image directly onto one's retina), speakers, or a router.

Jam it back in, in the dark.