"I took a break midway through just to smoke a cigarette and mentally regroup."
Personally, I only like to watch movies that make me feel good. A lighthearted comedy is a great choice, for example. However, I know some people like to explore darker topics and genres...
1. Martyrs (2008)
2. Dear Zachary: A Letter to a Son About His Father
3. Happiness
4. I Saw the Devil
5. A Serbian Film
6. Threads
7. The Human Centipede
8. Irréversible
10. Come and See
11. Requiem for a Dream
12. Sausage Party
13. Seven
14. Eraserhead
15. We Need to Talk About Kevin
16. Megan Is Missing
17. Monster (2003)
H/T to u/Aquii_changchi and AskReddit for having this discussion!
Note: All submissions have been edited for length and/or clarity.