I finally got an invite to
http://www.grandcentral.com/ which is a site that gives you one phone number, then when people call that, it rings all your other numbers, says who the caller is, and lets you decide to answer or not. As soon as you answer one phone, the others stop ringing. Additionally, voicemail goes to the website and you can play it from there. You can also click a contact on the website and it will call your number then the number you are calling. Lots of cool features.
Now I just have to decide whether to post the web doohickey that lets people call me without knowing my number or me knowing theirs.