A friend of mine has taken the CEO job at Jaxtr, a cool startup that lets people receive phone calls on their regular phones w/o giving out any of their phone numbers. I'm in the closed Beta program; try it if you want to give me call:
click to call me
Wait, isn't it crazy for me to post this? Won't I get phone calls at all hours of the night letting me know that I can buy V!@gra for cheap and that I am the heir of a fortune left for me in Nigeria? Nope. Until I approve your number you'll only be able to leave me a message. After I approve your number your calls can through, at a schedule that I can set (i.e. no calls for you at 3am).
Anyway, check it out. If you tell me what you think of the service I'll include your comments in my feedback to them.