I absolutely love Planet Earth. I own the series and enjoy watching every episode, they never get old or boring. My favorite episodes are From Pole To Pole, Caves and Jungles. If I were to recommend one to watch it would be From Pole To Pole. It covers all the episodes of planet earth, showing clips of each.
This series is truly breath taking. I never knew I lived in a world that looked like the way Planet Earth shows. I didn’t realize how many different animals there were in the world, and how they lived. The little salamanders in the Caves Episode are my favorite guys I learned about. If you have time, please watch every episode and you will never regret it. And if you loved Planet Earth I also recommend watch Life the new series about just animals.