The
Walking With Dinosaurs people have made an even cleverer series,
Chased by Dinosaurs, which sends a TV naturalist, Nigel Marven, back in time to pursue "elusive" critters like armored Devonian fish, Therizinosaurus (the "great claw" of the Jurassic), and mososaurs. The shows are a dead ringer for real naturalist shows. They've got a great moment in their boat, where they've sent their cameraman underwater for a "pre-scout," and they're all watching the tape he came back with, and there's the Dunkleosteus on the telly in the boat... just as if they'd really scouted the area for the giant killer armored fish. If you didn't know that time travel is fictional, you'd be convinced. The environments are convincing (real? who knows?) and Nigel's (painful!) interaction with sea scorpions and other critters is utterly convincing.
Worth a look. Especially if you're pals with a smart kid.