Amongst others, A Whole Lotta Nothing pointed out that Apple's latest Bluetooth and iChat updates let you basically use iChat as a VoIP phone.
The Bluetooth angle is very cool. Now you can pair a Bluetooth headset with your Mac, enabling you to use it as an audio source and destination. So, wander around listening to iTunes wirelessly, then use speech control to change songs.
(Yes, Rob Local, this means that if you and I both get webcams, we'll be able to chat)