One of my all-time favorite movies is Stanley Kubrick's 2001: A Space Odyssey. At several points during the film, we see ill-fated astronauts David Bowman and Frank Poole using a flat, iPad-like device. In one of the posters for the movie, astronauts at a base on the Moon are seen using this device (see image at right).
Those who read Arthur C. Clarke's companion novel will remember that he described this device as the "Newspad," something that was used by people of the future (as envisioned in 1968) to watch TV and read newspapers. You can read the full description of the device after the break -- it's described as a newsreader, with two-digit codes for each article online, and a constant stream of information from the hourly updates on "electronic papers."
Of course, we don't have two-digit references to articles; we simply need to tap on them to bring them up. We do need to know the "codes" for the world's major electronic papers; we refer to them as URLs or specific apps. But like many things Clarke foresaw in his lifetime of writing science fiction, the Newspad has finally become reality in the form of Apple's iPad.
I think Arthur would be proud.