Uhh???

Interesting question on Reddit (anyone else a fan?) - "if you missed the first 10 minutes, what would be the most confusing movie?"  And that resonated with me, because, before we were married, my wife and I used to go to the pictures after work on a Wednesday.  This was back when cinemas did rolling programmes, so we invariably got there 15 to 20 minutes into the main film, but rarely had any problem in picking up the story.  Then we'd watch the whole programme round again.  But this one time we just couldn't understand what the hell was going on and it wasn't until the second time round when we saw the beginning that it made any sense.  And the film?  The Manchurian Candidate - the original with Frank Sinatra and Laurence Harvey.  So that would be my answer.