“Three’s Company” aired on ABC from 1977 to 1984. Based on a British sitcom, the half-hour series starred John Ritter, Joyce DeWitt and Suzanne Somers. In later seasons, Jenilee Harrison and Priscilla Barnes replaced Somers. IMDB sums up the show thusly:
The misadventures of two women and one man living in one apartment and their neighbors.
The series became a huge hit for ABC. It went into local syndication in 1982.
Here’s a sample of the show’s opening titles:
The show created two spinoff series. “The Ropers,” aired for two seasons on ABC. After the conclusion of “Three’s Company,” “Three’s A Crowd” lasted for one season on ABC.
My Third Parent 