I love that movie too! It was so original when it was released, and probably still is - I can't think of anything like it.
I strongly recommend this film as an antidote to the usual rubbish found in theatres today. There was a sequel made, but it wasn't nearly as good as the first and is probably best forgotten.
For those who haven't seen the movie - this is not really a spoiler, still just the premise of the movie: when the bushman first finds the Coke bottle, it has just fallen from the sky, making him believe it to be a gift from the gods. When he takes it back to his village, it causes nothing but trouble and that's why he's sent to throw it back to the gods. The gods must have been crazy to give the people such a troublesome thing!