I found out about this great show about nature/wildlife/travel photography called "Travels to the Edge with Art Wolfe."
You can get more info here http://www.usa.canon.com/dlc/travels/season1.jsp
The host (Art Wolfe) is an awesome photographer from Seattle and does a great job hosting the show. The show is almost more of a nature/travel show with a little bit of photography thrown in, but if you go to the Canon page (http://www.usa.canon.com/dlc/travels/season1.jsp) you can watch some more "in-depth" clips from each episode where Art gets really specific about what he is doing and what equipment he is using.
Check it out!