If you haven't been watching the Planet Earth mini-series on the Discovery Channel, you are seriously missing out on a spectacular piece of work. Of course, I have Discovery HD, and that makes it all the more breathtaking, but even in standard definition, you really shouldn't miss it. For an entire hour every week, I'm transfixed, mesmerized, and completely engrossed in the stories of the animals and geographical areas that they have filmed. It's simply astounding.
I'm actually going to buy the whole series on DVD, because it's definitely something I'll watch over and over again.