im pretty sure it has a built in stand. I couldnt imagine watching a movie on a train/plane holding it in my hands for more than 5 minutes.
It has to be a good solid stand tho with variable angles. Im not sure about holding the thing with my left hand and surfing the web with my right for any longer periods of time, it would have to be on the table with the right angle. I wouldnt be comfortable just having in flat on the table either.
Im not to sure about the ergonomics. But then again i said the same thing about magic mouse and now im freekin addicted to it.