i am not sure how much of it is going to made available again but the best one (for me) has just be put up. "2. The Deep"

if you have not seen any of the series and are interested in nature or any other David Attenborough program this series knocks the rest clean out the park. all new footage filmed in 1080p and some of the most unimaginable things you could unimagine

miss it at your own peril

http://www.bbc.co.uk/iplayer/episode/b0 ... _The_Deep/