What's a movie that either questions reality, or perception?

Take a look at “Rashomon” for one.

What Dreams May Come with the late Robin Williams.

Watch it if you have the time.
Google a synopsis if you do not. I don’t have the inclination for homework questions, sorry.

Have you seen Synecdoche, New York? One of my favorite movies, and probably fits your criteria.

The movie “Inception” is all about erasing the lines between dreams and reality, all the way through.

“Eternal Sunshine of the Spotless Mind.” Now you’ve got several suggestions; watch a few and do the assignment.

The Matrix.

Hahaha. Eraserhead or American Psycho.

What about “The Sixth Sense”?

Flatliners

It’s a Wonderful Life

Dark city
The thirteenth floor
Catacombs

An Inconvenient Truth.

Divirgent. Love breaking the little boxes society tries to put us all in.

All of these deal directly with perception vs. reality

Moon
Momento
Solaris
The Game
Vanilla Sky

I encourage you to catch any of these you haven’t seen and to check out this link.

@Pachy GA Moon was a great B movie, memento too and I have not seen the game in years.

Watch The Game again. I promise you’ll get new insights. I loved Moon.