The best creation myths : 2001 : A Space Odyssey and Quatermass and the Pit. I'm a huge fan of both Nigel Kneale and Arthur C. Clarke. I love Carl Sagan's Contact as well for deep spirituality & a keen awareness of a Creator in terms of classic mythic narrative. The Alien mythos is pretty neat too; I love its recent extension into the realm of Prometheus, not the best of films but a top concept.