10. Grampy and Nu-Nu Visit the Huxtables (1989)
Martin's parents (Olivia's grandparents) come for a visit. Actor Moses Gunn and jazz singer Nancy Wilson guest star as Martin's parents.
Release date: 1989-11-30
Season number: 6
Episode number: 10
Runtime: 22 minutes
Cast
Bill Cosby
as Heathcliff Huxtable
Phylicia Rashād
as Clair Huxtable
Malcolm-Jamal Warner
as Theo Huxtable
Tempestt Bledsoe
as Vanessa Huxtable
Lisa Bonet
as Denise Huxtable
Keshia Knight Pulliam
as Rudy Huxtable
Sabrina Le Beauf
as Sondra Huxtable
Geoffrey Owens
as Elvin Tibideaux
Raven-Symoné
as Olivia Kendall
Joseph C. Phillips
as Martin Kendall