The Mating Habits of the Earthbound Human

An anthropologist from an alien planet provides voice-over commentary for a documentary at human courtship, mating, and reproduction.
David Hyde Pierce, playing an alien (credited as infinity-cubed in the opening credits), narrates a courtship in a late-20th century American city as an extraterrestrial nature documentary. The relationship "footage" is played straight, while the voice-over (with its most often wildly inaccurate theories) and elaborate visual metaphors add comedy.