Acting for Two: Not only did James Baskett portray Uncle Remus, he also voiced Br'er Fox. Also, when Johnny Lee, the voice of Br'er Rabbit, was called away to do promotion for the picture, Baskett stepped in to voice Br'er Rabbit for the "Laughing Place" scene. Oh, and Baskett also played a butterfly he was originally auditioned to play.
Cowboy BeBop at His Computer: Even sympathetic viewers tend to think that the "Tar Baby" is supposed to be some kind of racial insult. They apparently don't know that the basic folktale not only exists in many cultures around the world, but that it originated in Africa.
As mentioned, this is one the the few films to never be released by Walt Disney Home Video; the only clips from the film that are known to exist are on the Disney Sing-Along Songs VHS/Betamax/DVD series, which started shortly after Song of the South last saw daylight in 1986 and which was retired in 2006.