Ben Brooks reviewed the Jawbone Era, Jawbone's latest-and-greatest Bluetooth headset. I've been using one as well for the past couple weeks, after I sent my old Icon through the wash. While I don't share the problems he has with Bluetooth connectivity, I do agree that the shake-to-answer and shake-to-hang-up features can be annoying, and that the button on the back is crap.
It's also by far the best headset I've ever owned, which as Ben states, says a lot about the industry.