Steven Furst probably depicted the young Al Fansome in that film better than anyone before or since. RIP Steven.
The theme song was originally "Fleming House" but they changed it for the movie, some sort of copyright issue. It originally went "Fleming House, bah, bah, bah, bah, Fleming House, bah, bah, bah, bah..." The "bahs" are from the ewes kept at Fleming for the residents pleasure. You see one fleeing Delta House when Flounder and Larry first walk up to the place. That's called "cinema verite" by the French, or Cheese Eating Surrender Monkeys, whichever you prefer.