The character Dolemite (played by Rudy Ray Moore) shows up in the movie to guide Sugar Bear. There is also a poster of the "Dolemite" movie hanging in Sugar Bear's apartment.
Fred "Rerun" Berry appears in his Rerun costume from "What's Happenin," and gives his trademark "Heyheyhey" catchphrase. Another character calls him "Rerun," before correcting himself and calling him his character name of "Bootleg Greg."
Sugar Bear runs the exact same place in a very similiar outfit as did Rocky in his famous training scene while he's jogging up some steps. The very same location is used for the shot in BMH.