I'm a huge fan of Google; the search engine, Google Scholar, Reader, Picasa et al, but I'm especially a fan of Google Voice.
I don't know about the rest of you, but I get a lot of spam calls on my cell phone from scammers looking for someone that's not me. I even changed my number, which turned out to be a recycled number, and the calls were even worse!
The solution, though: A friend of mine sent me an invitation to join, and Google Voice has given me a lot of control to block these callers. It's so awesome.
Anyone else a fan?