Merely Marvelous is a celebration of the art and life of Broadway's greatest dancing star, Gwen Verdon. She overcame many obstacles, including rickets, the Hollywood system, a loveless first marriage and a difficult second marriage to choreographer/director Bob Fosse, to become a multi-Tony Award-winning performer. Gwen's life is told through interviews with family members and theatre associates as well as a mine of rare footage from her Broadway and Hollywood careers. Merely Marvelous is the story of a brave woman who rose to the very top of her profession.
| Actor | Role |
|---|---|
 Gwen VerdonSelf (archive footage) | Self (archive footage) |
 Bob FosseSelf (archive footage) | Self (archive footage) |
 Nicole FosseSelf | Self |
| JJim Henagan Jr.Self | Self |
 Chita RiveraSelf | Self |
 Charlotte d'AmboiseSelf | Self |
 Harvey EvansSelf | Self |
 Tab HunterSelf | Self |
 Lee Roy ReamsSelf | Self |
 Helen GallagherSelf | Self |
 Candy Ann BrownSelf | Self |
| JJohn BowabSelf | Self |
| MMimi QuillinSelf | Self |