Apple just announced FaceTime for Mac, allowing people to video chat with iPhone 4 and iPod Touch users right from their computer. You can download a beta version today.
Putting FaceTime on Macs always seemed like an inevitability, so there's not much of a surprise here. You can pick any of your contacts - be they on Macs, iPhone 4s or iPod Touches - and video chat with them just like you'd expect.
There's not much to it - even Steve himself said the demo was a short one. One interesting bit to note is that FaceTime isn't baked into iChat, it's its own app. Because people don't wanna TYPE in the future.