I have an HD DVD player and was displeased to find that this did not play on it. Not only that, but ONLY 3 OUT OF 4 DISCS THAT CAME WITH THIS WERE HD DVD'S, the other was a regular DVD. This is by far the worst purchase I have ever made on the internet. I am horribly upset that Amazon dishonestly sells their products. Being that I paid for Planet Earth on HD DVD, I expected to receive a working copy COMPLETELY in the HD DVD format but apparently a simple task such as an honest customer transaction is a little to difficult for Amazon. This was from a company that qualified for Amazon's free shipping so I can safely lay the blame with Amazon. If you want this product BUY IT FROM ANOTHER WEB SITE!!!! Don't buy this here unless you wish to be ripped off. I am a regular movie customer on Amazon and really do wish to express my extreme displeasure with this drop in service quality. Unfortunately this will mark the end of my Amazon usage.