Following up on Dean Kamen's upper limb prosthetic below, Google's Chief Internet Evangelist and Internet co-creator Vint Cerf spoke my kind of language at the launch of the Hear and Say Centre in Brisbane, Australia.
Ocular implants that allow you to see through clothes and aural implants that allow you to hear whispers from 100 feet away will raise some concerns, but the more mundane enhancements should be fine. As a quadriplegic, I wouldn't mind using bionics to get function back.
In the meantime, I'm still waiting on an 80 gig neural storage unit like the one from Johnny Mnemonic.
Net Creator Says Bionic Will Boom [The Age]