Watching a movie on a small screen might seem a bit much, but it beats learning a second (or third) language from the flyers in a waiting room.
I often watch full movies on my *cough* iPod Touch *cough* mainly because the wife got to the TV remote first. Its a small screen, but if you actually look at the relative size, its not much smaller than a TV. You sit further away from the TV than you hold your small-screen device.
When I don't have my iPod with me, I have a collection of 2 1/2 Men episodes on my w510 (Razr-like) in 192x120 3gp format, super small screen, bad sound, but better than nothing