A Very Brady Christmas was the biggest sitcom revival of the 1980s
https://decider.com/2018/12/03/very-brady-christmas-on-hulu/
The Brady Bunch cast -- except for Susan Olsen -- reunited for a movie-length special 30 years ago this month that can currently be streamed on Hulu. It became the second most-watched TV movie of the 1988-89, paving the way for the short-lived CBS revival The Bradys in 1990. https://www.youtube.com/watch?v=D9dcK1ayByE