Some movies end with a clear answer, allowing you to relax and enjoy the story you just watched. Others have you staring at the screen, replaying the last scene in your head and wondering if you missed something important. Sometimes a character disappears, a familiar reality suddenly collapses, or the meaning of the entire movie completely changes in the last few seconds. Sometimes filmmakers intentionally leave issues unresolved, and other endings are simply difficult to interpret. The result is the same. Viewers search online for explanations, debate theories, and try to piece together what really happened before the credits roll.
Inception (2010)
Dom returns home and spins the totem, but the film goes dark before revealing whether he is dreaming.

Shutter Island (2010)
Teddy discovers that he is a patient named Andrew, but his last words suggest that he may be faking a relapse.

Donny Darko (2001)
Donnie died when a jet engine crashed into his bedroom, preventing a disastrous alternate timeline.