The Cast Showoff: Several cast members get to show off their singing talents in various episodes.
Contractual Purity: Lisa Bonet got pregnant in-between seasons. Cosby was among those that felt viewers wouldn't accept Denise as an unwed mother, so Denise was transferred back to The Cosby Show before getting Put on a Bus so Bonet could have the baby.
Dawson Casting: Several of the cast members, including Jasmine Guy, Kadeem Hardison, and later Karen Malina White in the show's final season, were in their mid-20s when they were cast as Hillman students.
Ironically, not so with Dawnn Lewis/Jaleesa, who was supposed to be older than the other students. Jaleesa was said to be 26 at the start of the series and Dawnn Lewis was in real-life.
Screwed by the Network: According to the cast interviewed on Unsung, they believe that NBC canceled the show because of their decision to do an episode about the Rodney King verdict.
What Could Have Been: Allen Payne was asked to join the cast in the sixth season along with Karen White. (Both had appeared as their characters from The Cosby Show in Season 5's "Conflict of Interest" to tour the campus.) However, Payne opted to pursue a movie career, so Lance and Charmaine have a long-distance relationship that ultimately ends.
Debbie Allen actually wanted to keep Marissa Tomei on the show and had worked on potential story ideas for Maggie following the retool.