One of the most popular game shows in TV history has got to be Password. The game show began on CBS daytime in 1961 and various versions of the show have been on the air for a total of 20 years over the past five decades. There have even been times when the show aired in daytime and primetime simultaneously.
The last primetime version, Million Dollar Password, didn’t fare as well as the previous incarnations. It was hosted by Regis Philbin and lasted just 12 episodes.
Betty White holds a record for being the only person to guest on all the versions of Password. She also met host Allen Ludden on the series. They were married in 1963 and remained together until his death from cancer in 1981.