The story goes that during the production of 2010 Arthur C. Clarke was asked to list the top ten science fiction

films of all time. His rough cut of 12 is;With Jedi and Star trek II still under consideration.In hind sight, the question should have been two questions;andfilms. So as a meme, what would posters select as the 5 most important and 5 best (not necessarily exclusive) sci-fi films of all time?