There were 256 episodes of M*A*S*H, which ran from 1972-1983. It was a comedy about a mobile army surgical hospital during the Korean War and starred Alan Alda. In 2012, President Obama, 52, was asked by a couple in a Minneapolis restaurant about his favourite TV show and he replied: "You know what pops in to my head? I'm older than you, so you won't remember, but it's a show called M*A*S*H."