This is one of those movies I really wanted to see as a kid, but it never aired in my region. I think I would like it a lot more than I do now, since I find it pretty hard to get through at this point in my life. I did have the 10 minute 8mm compilation of it, which had a lot of the cool dinosaurs, though the ending was confusing even then.
Still, it does answer the age old question of "what do giant prehistoric crabs sound like" which I suppose is something. The animation is great, the movie is just not that good.