Editing What's Happening!! (section)

===Notable guest stars===
*[[The Doobie Brothers]] appeared as themselves to perform a concert at Jefferson High (which was portrayed as Doobie Brother [[Patrick Simmons]]' [[alma mater]]).
*Actor [[Theodore Wilson]] made three appearances on ''What's Happening!!'' as three different characters.
*Actress [[Chip Fields]] appeared on ''What's Happening!!'' as two different characters.
*The dance group [[the Lockers]], of whom Fred Berry was a founding member, appeared in the first season as a group called the Rockets for whom Rerun auditions.
*[[Sorrell Booke]] appeared as a college-basketball [[Booster club|booster]] who tries to manipulate Snake in the third-season episode "Basketball Brain".
*Actor [[Tim Reid]] appeared as Dr. Claymore in the episode "It's All in Your Head".
*[[Irene Cara]] appeared as Rerun's would-be [[Alien (law)|immigrant]] bride Maria in the episode "Rerun Gets Married".
*Musician and actor [[Slim Gaillard]] appeared as Al in the episode "The Thomas Treasure".
*Noted jazz singer [[Bill Henderson (performer)|Bill Henderson]] appeared in season 2, episode 3, "Trial and Error", as Clarence Hopkins.
*Actor and comedian [[John Witherspoon (actor)|John Witherspoon]] appeared as a disc jockey in season 3 episode 1, titled "Disco Dollar Disaster."