All in the Family

Archie refuses to donate blood because he's afraid that his vital fluids might get mixed in with those of a different race.

Archie scorns one of Mike's effeminate friends, unaware that one of his own beer-drinking buddies is a well-adjusted gay man.

Archie's dream of becoming a grandfather is dashed when Gloria suffers a sudden miscarriage.

Mike invites one of his hippie friends to spend the night in his living room, despite Archie's strenous ojections.

Louise Jefferson makes her first appearance, through husband George will remain an offscreen character for another two seasons. Their son, Lionel, had been a regular visitor to the Bunkers since the pilot episode, when the writers discovered how effective the street-smart black youth was at gently letting the air out of Archie's sails.

Edith abandons the kitchen for the courtroom when she is chosen for jury duty, leaving Archie to fend for himself.

No one in the family gets any sleep when Archie spends the night worring that he might lose his job.

Archie reevaluates his definition of success after he meets an old army buddy who's become wealthy in the used-car trade.

The Jeffersons arrive for dinner at the Bunkers'--minus husband George, who refuses to socialize with his white neighbors.