I have recently purchased the BR version of the Human Planet from one of the independent sellers listed in Amazon.ca. The version they have sent me turns out to be an "UK" version with format 1080i/50. The way to distinguish the version is by the cover, the UK version has a yellow "PG triangle" in the left bottom corner, while the US version doesn't. The problem with this UK Blu-ray is that due to its format, it's not playable to any North America machines (PS3, LG BR ROM, Samsung Blu-ray etc). In order to play, you actually need an all region player which I don't have. I ended up sending back to the seller and got my full refund. So if you're planning to buy the Blu-ray from any independent sellers from Amazon.ca, make sure you check with them whether they have the correct version and check the cover when you rec'd the package, b/c it turns out that my seller and its supplier weren't even aware of the region issue. See below links for more details. Hope you have a smooth purchase without going through the trouble like I did!
Issue with UK version:
Cover between the UK version vs US version:
Update - After rec'd refund from the independent seller, I finally got the correct North American Version. All I have to say is Wow, this has to be one of the best BBC Nature Series, right there at the top with Planet Earth. The picture quality from this series is superb, it content is amazing, plus the behind the scenes extra, this is must have for any BBC or Blu-ray collector. The series deals with human and our co-existence with Nature. A great educational documantary. Enough praise, go check it out yourself!