Planet Earth was filmed on Seven continents. It took Five years and included a $25 million budget. Planet Earth is such an epic, that it earns comparisons to some of the biggest Hollywood blockbusters. I think High Definition Digest said it best "It's the Titanic of television nature documentaries - a work of great majesty, high ambition and huge financial risk (after all, this isn't a genre known for generating huge profits)." David Attenborough's narrates the series and does a great job at it. Planet Earth first started airing as an eleven episode series on the BBC in England late last year, and more recently on the Discovery Channel and Discovery HD here in the United States. With Planet Earth you will see beautiful landscapes of our planet, and amazing animal scenes all which will leave you either breathless, or at times put you on the edge of your seat. How some of these things were even able to be photographed by humans often makes you wonder. If you have a 1080p HD TV I highly encourage you to get the blu-ray or HD-DVD of Planet Earth. Only then will you will really appreciate the beauty of this amazing series.
I had originally purchased the blu-ray of this, but ended up also buying the DVD version of this because of all the bonus material included on it. Sadly the bonus material is not included on the blu-ray or HD-DVD versions.