I have my biggest video playback problems when some background process (like the N800 connecting to a nearby open wireless network while the bus is stopped at a red light) tries to draw an info box on the screen in the middle of my 1970s Doctor Who episode. By the way, did you know that in a 1976 episode, Doctor Who hooks his brain up to a giant computer and then chases a villain through a computer-simulated reality... called the Matrix? Hmmm, sounds like prior art, to me.