What is the #1 best movie ever?

I'm curious, what is the #1 best movie ever, in your opinion? There are so many incredible films out there, it's hard to choose just one. What criteria do you use to determine the top spot? Is it the storytelling, the acting, the visuals, or perhaps a combination of all of these factors? I'd love to hear your thoughts on this topic and why you believe your chosen movie deserves the top spot.