I would appreciate any advice on a few things before I am able to purchase this blu-ray. First, will I be able to play this "PAL" format disc on my North American PS3 blu-ray player and Samsung LCD 1080p? From what I have read elsewhere, I believe that the PAL format is irrelevant with HDTV's/ HD format media. Also, what region is this disc? It is not listed anywhere on this site, yet, the UK Planet Earth is regionless. I ask these questions simply because this disc will not be available in North America indefinitely.