A good follow-up came with Spike Lee's "School Daze" (1988), which showcased both Campbell's singing and acting skills. She went on to appear as one of the New York teens living on "Rooftops" (1989) and supported Eddie Murphy in "Another 48 Hrs." (1990). Campbell played the girlfriend of Kid (Christopher Reid) in the Hudlin brothers' teen comedy "House Party" (also 1990) and choreographed a dance battle; she followed up in the same role in the film's 1991 and 1994 sequels. Eddie Murphy promoted her to wise-cracking ex-girlfriend in the yuppie comedy "Boomerang" (1992) and she provided one of the voices for the animated "Homeward Bound II: Lost in San Francisco" (1996). Campbell's singing skills were again brought out with Rusty Cundieff's comedy "Sprung" (1997).
On TV, Campbell popped up in guest spots on "Blossom", "Roc", "Fresh Prince of Bel Air", "A Different World" and several other series. She appeared in the TV-movies "Heart and Soul" (NBC, 1988), as a hopeful young singer, "Moe's World" (ABC, 1992), as an unwed mother, and as an orphan in the series "Rags to Riches" (NBC, 1987-88). But Campbell is best recognized for her portrayal of Gina, the strong-willed and intelligent but tolerant girlfriend (later wife) of the hyper-macho yet insecure Martin Lawrence on the Fox sitcom "Martin". In late 1996, Campbell walked off the show, filing a sexual harassment lawsuit against Lawrence and the production company, but by March 1997 had settled the matter out of court and returned for the show's final episodes.
Campbell has also appeared on a number of children's, educational and awards shows, such as "GED--Get It!" (PBS, 1993), "Happily Ever After: Fairy Tales for Every Child" (HBO, 1995) and several NAACP Image Awards shows.