Prices etc. are still a problem though... (oh, and you can't get kindles over here - brit firm plastic logic bringing one out soon though. IMHO I think that in a couple year's time, when they hit ipod-like mass market (and are a lot cheaper) these could potentially bring a lot of change/possibilities in HE. Unless something else takes over by then of course...
E-paper readers get that little bit closer to mass market. Amazon launches larger version of kindle - business and academia prime markets for larger (and annotating) readers given reports/papers/textbooks.