Beau is Afraid was the last one I recall. I think it was mostly the latter half of the movie where I started to get a bit confused and needed the ending explained to me.
What movies made you look up some kind of explanation afterwards? I feel like I have done it several times in the past for more surreal movies but can’t think of any other examples.
It can also be a TV show.
If you have the chance to see it in a cinema I highly recommend. Something about the big projection and sound, plus ideally an intermission really made it click for me
Kubrick actually fought against including an intermission. It was the norm at the time to pause a movie halfway in, raise the house lights, and let everyone piss and get a snack.
The compromise was that the house lights would stay down and the movie would keep running showing the intermission card, with the music that he had composed for it.
I can see from the filmmaker’s perspective but given it’s basically unheard of these days it felt cool and novel. Pretty sure the screening I went to did just what you described