In case you've been living under a rock for the last month, I thought I would post about the Planet Earth series the Discovery Channel's been running since March. Tonight is/was the culmination of this 11-part series in which high-def cameras and non-obtrusive methods of filming were used to create this amazing eye-candy of a mini-series.
So far, my favorite is the Great Plains series, although I haven't seen the one on Mountains yet. Two new episodes are airing tonight, on Forests and Caves. If you don't have times to watch the episodes, you can see some great photos here.
Happy Earth Day and I hope you get to watch at least some of this series. It really is amazing.