2001: A Space Odyssey (1968)

Daisy, Daisy,
Give me your answer do!
I'm half crazy,
All for the love of you!
It won't be a stylish marriage,
I can't afford a carriage
But you'll look sweet upon the seat
Of a bicycle made for two.

Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb (1964)

Depending on my mood when watching this movie, I either laugh a lot or feel vaguely depressed.  Ahhh, nuclear humor.  David has a friend who says he judges people's intelligence based on whether or not they laugh at this movie.  I will definitely see this movie again (hopefully in a good mood if it happens to be with David's friend), and regardless of my mood, I can give the movie four stars.

I give you the highlights:

Peter Sellers:

and Peter Sellers:

and Peter Sellers:

and the finale:
Watch it.