Most Iconic Scene from a Kubrick Movie?

Probably on every young film-maker's "I was inspired by..." lists, Stanley Kubrick has gone down as one of the most celebrated directors in history. Respected by most and loved by many, this innovative and knowledgeable master of cinema created a number of incredibly layered films in a number of genres that have stood the test of time.

Which scene from his movies, as nominated by IMDB's Poll Board Members, do you feel is the most iconic of his filmography?

See also:

Most Iconic Scene from a Scorsese Movie? Most Iconic Scene from a Spielberg Movie?

Discuss the list here