Picked up two DVDs recently, both produced by John Payne (who discovered Humpback songs) and featuring lots of great footage. Both talk about several species of whales, including blue, fin, humpback, bowhead, minke, orca and dolphins/porpoises. Lots of amazing stories.
Like the dolphin "Fungie" who has inhabited the Dingle bay in Ireland for 33 years, seeking out swimmers, boaters, fishermen, any human contact. Dolphins can live to age 48 so far as scientists know, but it's still weird to see footage from 1983 and realize the same dolphin is still rubbing up against swimmers today.
Or another bay in Scotland, where whales come to have fishing nets cut away from themselves. There's a fisherman there who has made it his life's work to rescue whales, and so far more than a thousand whales have come to see him.
Or the cooperative feeding of humpbacks, where one whale will blow a bubble net around a school of fish and then 5-8 whales ascend inside this net, scooping up fish in unison at the surface as the fish run out of room.