Premiered: 2000, on Oxygen
Premise: Four celebrities took turns questioning a guest and trying to guess his or her secret (which was revealed to the host and the audience) in this Goodson-Todman classic. One of the show's creators was future song parodist Allan Sherman (`Hello Muddah, Hello Faddah'). The most successful game show of its time, it ran on CBS and in syndication from the early 1950s to the mid-'70s. It was resurrected on Oxygen in 2000, virtually unchanged in format but with more prize money up for grabs.