magicJack

Yes, I laughed too when I first heard the name of the product, but it really sounds cool.  Basically, you plug the device, which is about the size of a pack of gum, into a USB port on your computer.  You plug a regular analog phone intop the other end of the device and you get assigned a US(maybe Canada too) phone number.  Use it top make unlimited calls.  The device cost $39.99 online and after the first year, the cost is $20/yr.

I liked it so much I ordered one myself.