As an historian, there are some films I have refused to watch. I think this stems from an horrendous trip to the cinema to see Braveheart. My girlfriend at the time kept telling people afterwards that she was having to nudge and shush me when I was laughing out loud or when I muttered things like "They're wearing Tartan?", "He wasn't a poor farmer he was a Lord!" As one critic wrote "they should have stuck a plasticine dog next to him and called it William Wallace and Gromit"
Anything with the name Mel Gibson anywhere near it should at best be taken with a pinch of salt (Braveheart, We Were Soldiers) or is actually 'dangerous'/ pernicious in is intent (Patriot, Apocalypto, The Passion of the Christ).
A few other 'questionable' films for historians:
Pearl Harbour
JFK
Imitation Game