Project X. I can't say it is a favorite, but it tears me apart every time I see it. When that old chimp gets locked into the test room and he gets nuked, makes me cry every time. Gorillas in the Mist was pretty good too.
Help me to remember, was it George of the Jungle where the gorillas raised a young boy and then George took his ape father to the city and the ape was killed?
Peace, Rustic