What movies have you watched that affected you so much that you can’t or won’t watch them again?

I was reviewing my movie collection and when I got to Grave of the Fireflies, I just stopped and stared it. I still remember where I was and who I was with when I watched that movie. Almost twenty years ago. Still can’t bring myself to fire it up again.

Only other two that I can think of for me are: Requiem for a Dream, and Eternal Sunshine of the Spotless Mind.