Episode 50 - Bring 'Em Back Alive
The Huxtable home is invaded by an elusive garter snake.

Episode 51 - Food For Thought
When a family friend has a heart attack, Clair challenges Cliff to give up his beloved high-fat comfort foods.

Episode 52 - Golden Anniversary
The entire clan gathers to celebrate Russell and Anna's 50th wedding anniversary. Frank Foster and the Count Basie Orchestra guest star.

Episode 53 - Man Talk
Theo asks his for his parents' advice when he runs into girl trouble at school.

Episode 54 - Mother May I?
Vanessa does her best to get around Clair's ban on wearing make-up to school; Theo becomes safety-obsessed and organizes a Huxtable family fire drill.

Episode 55 - The March
When Theo has to write a paper about the March on Washington, The Huxtable and Hanks grandparents share their experience.

Episode 56 - Theo's Flight
After a member of the Tuskegee Airmen makes a speech at their school, Theo and Cockroach decide that their main purpose in life is to fly.

Episode 57 - Vanessa's Rich
When Vanessa is accepted into the pep squad, her family's wealth causes her to be labeled a stuck-up rich girl.

Episode 58 - Denise Gets A D
Guest Star: Rosalind Cash
Denise's difficulties in school create tension at home, especially around straight-A sister Sondra.

Episode 59 - A Girl and Her Dog
Rudy and Peter discover that pet care is a serious responsibility when they take in a lost dog.

Episode 60 - War Stories
Russell and Homer bring an army buddy to the Huxtable house, and soon the war stories are flying back and forth. Meanwhile, Vanessa prepares for a skating date with a new boyfriend, and Cockroach gives Theo some very bad advice about handling women.

Episode 61 - Cliff In Charge
The house is in chaos as Clair and Anna head to a ceremony at Hillman. Russell comes to help Cliff with the kids, and Theo fields prank calls from girl classmates who have posted his number in the school ladies' room.

Episode 62 - Monster Man Huxtable
Elvin and Sondra come to visit and reveal that they are contemplating marriage.

Episode 63 - Rudy Spends the Night
With Rudy staying at her grandparents' and Denise and Vanessa headed for fun in Greenwich Village, Cliff and Theo organize their own "Huxtable Men's Club."

Episode 64 - Say Hello to a Good Buy
Cliff and Theo try to conceal their family's financial circumstances to get a better deal on a new car. Sinbad and Gilbert Gottfried guest star.

Episode 65 - Denise Gets An Opinion
Denise mistakes a medical student assigned to follow Cliff for the phone pal she has finally agreed to meet; a broken-hearted Robert decides he may want to date Vanessa again.

Episode 66 - Calling Dr. Huxtable
Cliff fills in for another doctor and winds up with three women who are due to deliver at roughly the same time.

Episode 67 - You Only Hurt The One You Love
Cliff attempts to get a fired cleaning lady reinstated at the hospital; Theo and Rudy's tumbling games result in Rudy's getting injured. Rita Moreno guest stars.

Episode 68 - The Shower
Clair and Denise plan the bridal shower for Denise's soon-to-be-married pregnant friend. Lela Rochon and Deon Richmond guest star.

Episode 69 - Cliff's 50th Birthday
Denise and Sondra return home to help the Huxtable family celebrate Cliff's half-century birthday.

Episode 70 - I Know That You Know
The family tries to hide Sondra and Elvin's news about their engagement from Cliff. Theo tries to trip Cliff up with his new joke kit.

Episode 71 - The Andulusian Flu
When both Cliff and Clair come down with the flu, Theo takes over the head of the household. He begins pushing all the housework upon Vanessa and Rudy while he spends time with his girlfriend, Lana.

Episode 72 - Bald and Beautiful
Cliff visits with old friend Scott Kelly, whose recent heart attack has caused him to change his entire personality. Theo and Cockroach embark on a career opportunity which involves shaving their heads for a music video.

FACTOID: Bill Cosby and guest star Robert Culp worked together on the series I SPY.

Episode 73 - Planning Parenthood
Clair's sister arrives for a visit and announces her desire to have a baby. Pam Grier guest stars.

Episode 74 - Hillman
The Huxtable family visits Denise at Hillman to pay tribute to retiring college president Dr. Hanes.