There is a guy that walks around where I work with his bluetooth headset on all day long. He goes into the bathroom with it, the elevator, and into meetings. Since when do you have to be poised to get a call 24×7? Take the headset off and put it into your pocket. When you get a call that lasts longer than a minute, put it on. Simple as that. The blue light on it gives me a headache too!! Seriously.
Then I found this post today on the 37 Signals blog. Holy crap you need to read the comments.