Some Call Them Freaks (1981)

Super obscure documentary featuring rare photos and actual film footage of human oddities like Robert Wadlow, the tallest man in history, Robert Earl Hughes, the heaviest man in history and John Merrick, the Elephant Man. Plus many others like the Lion Man and Tom Thumb. Very touching and highly recommended. Narrated by Richard Kiley.

Also included as an extra feature is another rare documentary titled Adolph Hitler: Portrait Of A Tyrant. Narrated by Hal Holbrook and produced in 1981.