I have many, but probably my absolute favorite is in "Gone With The Wind" in one of the final scenes when Scarlett asks Rhett "Where shall I go, what shall I do", and Rhett responds with "Frankly my dear, I don't give a damn!" The fog in this scene is really eerie!
One of the great classic lines and scenes of all time.

And, of course in an even later scene, Scarlett says something along the lines of "I'll think about it tomorrow. After all tomorrow is another day" or something like that.
I'll think of some of my other fave movie scenes and post them later.
