Related Clues:

• TV series that premiered in 1977
• '80s sitcom
• TV sitcom from '77 to '84
• 1970s-'80s sitcom, and what the answers to starred clues all can be
• Sitcom that debuted in 1977
• Sitcom whose theme song began, 'Come and knock on our door ...'
• 1970s-'80s John Ritter sitcom
• Hit sitcom for Ritter