I don't think I've actually ever seen Titanic. It just feels like I have because of the countless times I've heard about it, the amount of references, pictures, and gifs I've seen, etc.
Star Wars
Harry Potter
Hunger Games
Also, I watched Frozen last week for the first time and it was boring af, couldn't keep watching it till the end tbh
There's a lot actually, I'm not really into movies.