There are many movies and TV series that don't stick in my head and sometimes I can realize 30 minutes into a movie that I've seen it before. Other movies I can think about for decades after I've seen them. I thought I'd make a list of these movies and TV series here as I've been looking for such a list myself. Feel free to write to me if you have any tips for others I should watch or add to the list.
The Matrix (only the first film)
Interstellar
American Beauty
Undone (TV series on Prime Video)
A beautiful mind
The Truman Show
Midnight Gospel (TV series)
Groundhog Day
Avatar
Into the Wild
Captain Fantastic
A man from Earth
Inside Out
Soul