Thanks to Fortune's Apple 2.0 blog for pointing out this YouTube video of Apple products through the ages.
Without paying attention to the fact that they're Apple, they're like a trip through our technological form-factor development-- getting more and more like our science fiction imaginings over time. (Those who read or watch science fiction will get what I mean. If you don't, that's OK.) More curvy, metallic, less boxy. What's important is the stuff inside, software miniaturization, power -- but the human 'touch' aspect matters, too.