Overrated:
Fury
I know quite a few people who were extras and supplied equipment and arms for the film, and what they were promised by the production crews vs what was released was a traversty. They were told they were going to get a gritty realistic portrayal of last days of WWII but what they got instead was a fantasy tank movie. If they wanted to do a fantasy tank movie production should have watched Kelly's Heroes, that's how you do a fantasy tank story.
Terrible:
The original Christopher Reeve Superman.
Iconoclastic I know but sorry, it is awful, I was dragged to the cinema to see it as kid, hated it and as I've matured it hasn't improved.