Google Voice may hit your desktop soon, as a Skype competitor
It's only an internal test so far, so there's no public beta to download. If TechCrunch's sources are accurate, though, this will unchain Google Voice numbers from physical phones. You'll be able to use your Google number the same way that people use SkypeIn numbers now: you won't have to have an actual phone, but you can receive any kind of incoming call on your desktop. This could be the coolest thing to happen to phone calls since Google Voice itself.
Ed. note: Our own Google sources have confirmed this as well, saying "We're looking at a full, free, VOIP/SMS desktop client...It's amazing."