Regarding the bandwidth: take a look at the left side of the video, it shows the needed info.
One thing many people missed: Almost at the end of the demo, he shows Photoshop CS4, and then he moves the windows. Take a good look at the cursor, specially when the cursor is out of the window it shows something which might be familiar to any Linux user
"Spock, did you see the looks on their faces?" "Yes, Captain, a sort of vacant contentment."