Powers of Ten (1977)

Short. Starting from a picnicking man on the shore of a Chicago lake, it first zooms out until we can barely see the galaxies' lights in the distance; along the way, we are informed visually and by the narrator every time a tenfold increase in coverage is achieved; then it makes the inverse path at a faster rate until it zooms in on the man's hand; from then on it continues to zoom in, now at the original rate, until the tiniest fraction of matter known to man is approached.