I *just* finished Three on a Match, which not only did I love, but it left my mouth agape for the last 5 minutes of the film.
Like someone said, though, TCM really does not have any garbage. Even the worst movies (and in all sincerity, I have never seen a classic movie that I would never, ever watch again) seem better IMO than a lot of today's movies. And trust me, I've seen some bad movies. Varsity Blues, anyone??