I don't like watching movies, so for me, a film reaches that status if I want to watch it again after I finished it. I don't mean:

Friend: Hey, want to go watch ****** again?
Me: Sure

I mean:

Friend: What the hell are you doing?
Me: Getting in line to buy tickets so we can watch it again.
Friend: Okay...
Me: I mean come on! It was justsowowIcan'tbeleivethatonepartwheretheydidthethingandthecharacterizationofthecastisjustwonderfula ndIlovehowthesoundtrackjusthiteverysinglemomentwithemotionalecstacyimeanwhyarentyouoverherestandingi nlinesowecanwatchthistestamentofmovieawsomeness!!?!?!?!?!!?!?!?

That's the kind of thing that happens. I think The Dark Knight was the last film that has done that for me.