In 'M*A*S*H', during which war is the series set?

Which phrase comes from 'Happy Days' and means a show has passed its peak? In 'I Love Lucy', who played Lucy Ricardo? In 'I Love Lucy', what is the name of Lucy's husband? In 'The Andy Griffith Show', in which fictional town is the show set? Who played Hawkeye Pierce in the TV series 'M*A*S*H'? The 'M*A*S*H' finale in 1983 was for decades the most-watched broadcast in U.S. history. How many viewers did it have? In 'The Brady Bunch', how many children are in the blended family? In 'Gilligan's Island', how many castaways are there?