The Mating Habits of the Earthbound Human(1999)

A How-To-Do-It Guide.

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.