I'll go first. Mine is that I can't stand the Deadpool movies. They are self aware and self referential to an obnoxious degree. It's like being continually reminded that I am in a movie. I swear the success of that movie has directly lead to every blockbuster having to have a joke every 30 seconds
The Godfather, extremely overrated and very boring. Saw it many years ago, and maybe my taste in movies have changed a bit, and I consider rewatching other movies I did not like, but not that one.