ive seen every episode so far and i love them all. very interesting and some of the fotage taken is amazing. great show, but my favorite episodes were deep sea, the reef episode, and freshwater. basically a major fish nut.
I loved the dolphin fish (thought thats what sigourney called it) when they were hunting at night, but it was hard to get a feel for how big they were.
AHH MAN!!!!, I feel asleep about half way through the freshwater episode, haha, but I will catch it again. I loved the shots of the giant salamanders they got, all of it always amazes me.