I have an emotional attachment to this movie, as it was the first movie I ever went to a theater to see. As a six year old living in Fairbanks, Alaska, I begged my mother to take me to see this move about my childhood passion, dinosaurs. Thirty years later, I stumbled across a copy of this film at a video store and purchased it. I was surprised to find that, despite the rather unrealistic dinosaur animation, the movie holds up pretty well. Although much criticism has been directed against the leads in this film, Wayne Treadway as Dumpy ("Dinosaurus!"), Jack Younger as Jasper (Jasper: "Well, we're looking for a caveman, right? So, I think we ought to look in a cave!" Hacker: "Very good, Jasper, I had no idea you were an anthropologist." Jasper: "Not a very good one, boss. I haven't been to church in years.") and Gregg Martell as the Neanderthal Man turn in excellent performances in supporting roles. Martell, especially, combines comedy and pathos in his portrayal of a man caught out of his time but still very much a human being. The scene where Julio (Alan Roberts) rides the back of his pet brontosaurus thrilled me and the final battle between the T-Rex and the steam shovel gave me nightmares for years. How many good movies can you say that about?