I love the Land Before Time. We had the original VHS copy when I was a kid, and my brother and I watched it so many times the protective flap is gone, and it sometimes gets stuck rewinding, and you have to do it manually.
Classic story of friends going on an adventure together, and trying to find their families. Overcoming their differences is easy for some of them, and hard for others (Sara, the stubborn triceratops). Cute movie that any kid will enjoy.