The Best Ending

Which movie has the best ending of all time?

Many kinds of "best endings": a great twist, a fitting ending to a great movie, an ending that is so much better than rest of movie that it saves it. And the question is, is "ending" the last 10 seconds or last 10 minutes?

Some of my favorites:

The Usual Suspects
The Illusionist
Mad Max 2: The Road Warrior
The Cabinet of Dr. Caligari
Lord of War
The Godfather

One Flew Over the Cuckoo's Nest

Some of my favorites:

The Maltese Falcon
Primal Fear
Inception
Vertigo

All the named films are great, let me add mine. I like The Game.