One of television' biggest hits comes to a close with the eighth and final season of "The Cosby Show." Cliff (Bill Cosby) and Clair (Phylicia Rashad) cope with their three grandchildren as Theo (Malcolm-Jamal Warner) graduates from college, Vanessa (Tempestt Bledsoe) makes a shocking announcement and Rudy (Keshia Knight Pulliam) struggles with adolescence. Sabrina Le Beauf, Geoffrey Owens and Raven co-star.