I just watched the Deep Ocean and Jungle in HD on my new tv and all I could say the whole time was WOW. I watched the BBC original so I had the original narration which was great. I would love to pick up these on either HD DVD or Bluray once I can get a player for a little cheaper but I think I will lose a little quality with the dvd box set and save some cash with that and get all the extra "making of" features as they were taken out of the HD versions for some reason.