Haven't seen the final episode of Prehistoric Planet yet, but I've really enjoyed it so far. I wish each episode were an hour long rather than 30 minutes. My opinion so far has been "That's it?" after the end of every episode. I understand why; it's all CG. It's really well done. Most times I can watch and just forget it's all fake. One major criticism to me is the world is devoid of shit. The pterosaur cliffs should have been covered in filth like those for birds today are.