In Which We Serve
I had read about this film for years, and the commentary on Criterion's "Brief Encounter" kept referring to it. I got a rather scratched up version from Netflix and was amazingly surprised at how good it was, how suspenseful, well-acted and crafted. One has to use their imagination for a bit to drop Noel Coward into the Lord Mountbatten role of boat captain, but he fares very well. Worth the view.