Now I'm not looking for what you think is the best or what your favorites were, I'm just asking what you think are the top five most important Sci-Fi films to the genre. Maybe a top 20 should be made later, but for now, just top five.
Personally for me I think 2001: A Space Odyssey, Planet of the Apes, Star Wars: A New Hope, Blade Runner, and The Matrix are the five most important