I saw the 2009 sci-fi film Moon (directed by Duncan Jones and starring Sam Rockwell) on my flight home from London earlier this week. It's such a sad, powerful and challenging movie in the sense that it confronts me with questions of existentialism. Without spoiling it in case you've never seen it, here's a short clip:
Video from pfcymbaline's youtube channel
Tubeway Army's Replicas from their 1979 album Replicas:
Video from Scott Thompson's youtube channel