I was lucky to catch about 30 minutes of hour 1 of this 3 part Nature series on PBS.
http://www.pbs.org/wnet/nature/episodes ... tion/6524/
I found it fascinating. Chris Morgan is an ecologist specializing in bears and does a wonderful job narrating this series which features Grizzly, Black, and Polar bears across Alaska. He camped for 10 weeks with his film maker friend.
At some points in the show he is 6 feet from a huge mother grizzly and her 2 cubs as they graze their way over to where he is sitting.
Also of interest to our community, he gets around on his BMW F650GS Dakar thumper. The show does not feature his motorcycle very much, but cool to have an adventure rider doing the show.
Chris answers a lot of viewer questions (including some about his Dakar) in these video chats:
http://www.pbs.org/wnet/nature/episodes ... rgan/6539/
An AdvRider thread on the subject
http://www.advrider.com/forums/showthread.php?t=687911