Google Voice
Google.com/voiceLate to the party...as usual.
This service looks pretty cool. Plus, being the Google fanboy that I am, I've signed up for my invite to get a Google Phone Number.
Truth be told, I can't help feeling like it's one step closer to "1984" with Google assigning me a number. That said, I'm still excited to try it.
Here are a list of all their videos detailing the many features of Google Voice.
Below is their Overview video:
