If you're looking for a few minutes of entertainment -- and if you're reading this blog, you probably are -- I highly recommend checking out the various 2-4 minute clips that the BBC has posted on YouTube featuring David Attenborough discussing various exotic animals and plants. This one about caterpillars in Borneo protecting themselves from predators is really cool; so is this one on how cuckoos trick other birds into taking care of their young. Just go here and start clicking; the BBC has posted about 45 of these clips on YouTube, and it seems that they're all pretty good.