I particularly enjoy sci-fi that explores philosophy using various archetypes that can't exist yet without some advance in texhnology, or explore society by taking certain aspects to their logical extreme.
Blade Runner is a good movie example of the former. It explores the nature of humanity, consciousness, and "self" using advanced synthetic beings. Children of Time is a book example that explores evolution, religion, and more.
GATTACA is a good example for social exploration: eugenics, and morality. Children of Men is another good one: what would happen to society if we saw the end of our species in the near future.
Other books I've enjoyed along those lines: XX, Left Hand of Darkness, Three Body Problem (all 3 books). Other movies: District 9, Ex Machina, WALL-E, The Matrix.