Bloody hell this is cool, you have to check it out. Live video from the International Space Station (and ground control).
You really have to go see it on NASA TV right now.
After you follow the link, open the menu on the right and choose the channel you want to see. The public channel includes ground control as well, the 'Space station video' feed is straight from the ISS.
You might have to click 'Other Viewing Options' to find a feed that works for you.
I saw the link on the Bad Astronomer blog, but I'm sure it was announced somewhere else ;)