I like to think that the final few moments of a film can double or halve how good the movie is, might wear off after a while though.
12 Monkeys' last shot I'm going to rip off in my short film. The penultimate shot needs a honorable mention too.
Dancer in the Dark was doubled by its last shot. Last scene actually but the last shot's great too.
Saw's one of the best ever! "Game Over." *SLAM*