The Cosby Show — Season 6

Denise returns from Africa, with a new husband and stepdaughter in tow. Joseph C. Phillips and Raven-Symoné join the cast as Martin and Olivia Kendall. Last appearance of Peter Costa as Peter.

After recreating one of Cliff's stories, Theo and his roommates are kicked out of their apartment. First appearance of Keith Diamond as Danny. Guest appearance by Anthony Quinn.

Vanessa and her friends get drunk playing a drinking game. Pam Potillo as Janet. Elizabeth Narvaez as Kara. Guest appearance by Bill Cosby's real-life daughter Ensa Cosby, upon whom the character Vanessa is loosely based.

Denise forgets to respond to a letter from the Navy and confirm that she and Martin want housing on the naval base in Rhode Island.

Theo is diagnosed with dyslexia, a learning disability which contributed to the academic problems he has had over the years. Michelle Thomas as Justine.

Denise and Olivia babysit Winnie and Nelson (Sondra and Elvin's twins).

Rudy and one of her classmates have a crush on each other, but peer pressure could ruin things. Guest appearance by Elaine Stritch.

Cliff dreams that men worldwide have become pregnant -- including his son Theo, his sons-in-law Elvin and Martin, and himself. Voice-over by NBC News correspondent John Palmer.

Denise invites Martin's ex-wife Paula for Thanksgiving dinner. Clair continues to send Cliff to the store for last-minute groceries, despite the fact that it is a cold and rainy Thanksgiving Day. Victoria Rowell as Paula.

Martin's parents (Olivia's grandparents) come for a visit. Actor Moses Gunn and jazz singer Nancy Wilson guest star as Martin's parents.

Cliff is in charge while Clair and Denise are out of town. Guest: Elaine Stritch as Mrs. McGee

As Christmas approaches, Cliff and Martin get to know each other better. Denise and Martin recreate their wedding ceremony, which allows Cliff to give his daughter away.

Elvin takes two female college friends to dinner to reminisce and Sondra becomes very upset.

Guest appearance by The Muppets (Performed by Jerry Nelson, Dave Goelz, Richard Hunt, and Kevin Clash.) Voice-over by Wallace Shawn.

Denise causes trouble while trying to help Vanessa get a date.

Olivia's 4th birthday.

Theo thinks about proposing to Justine. Kenny, who was "born to sing the blues," gets the chance to sing with a legendary blues singer/guitarist. Deon Richmond as Kenny. Michelle Thomas as Justine. Guest appearance by B.B. King

Rudy steals money from Clair to buy a sweatshirt (Rudy and her friend Kim do the Electric Slide). Deon Richmond as Kenny.

Rudy is forced to take tap dancing lessons for a school project. Cliff is presented with a "challenge" he cannot resist. Guest appearances by Howard "Sandman" Sims and Elaine Stritch.

Cliff, Elvin and Martin secretly compete to determine who is the most romantic husband in the Huxtable family.

Cliff and Clair discover that Theo has moved in with Justine. Last Appearance Of Michelle Thomas as Justine. Victoria Rowell as Paula.

Clair is burned out from work and family pressures and hurries off to the woods.

Vanessa and her friends sneak out of town to attend a concert in Baltimore, but encounter huge problems along the way. Afterwards, she must face the wrath of Cliff and an infuriated Clair.

The Huxtables' nerdy neighbor (Wallace Shawn) reinvents himself after a divorce.

Denise wants to become a teacher . . . without finishing college. Guest appearance by Max Roach.

"Gram Tee", Cliff's 98 year old great aunt, comes to visit the family.