A few others: Chicago, Philadelphia, Copenhagen. I am a bit biased, but I think Copenhagen has the best service in that regard. Almost any main transit route runs 24/7: the metro, the 9 'A' trunk bus routes, most of the commuter-rail 'S-train' lines, and even the international 'Øresundståg' train service to Malmö. It makes a nice difference in peace of mind, because you never have to worry about being stranded anywhere.