Dorothy Diane "Dedee" Pfeiffer  is an American film and television actress. She is best known for playing Cybill's daughter, Rachel, on the sitcom Cybill (1995-1997), Sheri on the sitcom For Your Love (1998-2002), and her film appearance as Val in The Allnighter (1987). 

She is also known for guest appearances on several other 90's sitcoms such as Wings, Ellen, Seinfeld, and Friends. Most recently, she is known for playing Denise Brisbane on the ABC drama Big Sky.

Since 2020, the “Cybill” alum has been starring in David E. Kelley’s hit ABC crime drama “Big Sky,” which she describes as a “rebirth” after taking a 10-year hiatus to battle addiction issues and raise two children as a single mother.

While away from Hollywood, the actress also went back to school, earning a master’s degree in social work from UCLA.

She says leaving acting behind for a decade provided her with a reality check, as she got to work with the homeless and the Los Angeles County Department of Mental Health.