Joost
There's been a lot of buzz around Joost, a service from the people who gave you Kazaa and Skype. The new technology uses peer to peer technology to bring television to your desktop. SFGate
wrote an article on it yesterday. I downloaded/installed it and tried four different videos. None of them worked. Let me know if you want an invite. This technology would be really cool if they allowed you to create your own channels like YouTube.