what tv shows started in 1957
1 January 25 â Steve Allen makes his final appearance as host of NBC 's The Tonight Show. 2  He is replaced by Jack Lescoulie and the show is changed from a talk/variety show format to be more like the series Today, with the title Tonight! 3  America After Dark. Collins doesn't last long; NBC is already planning to replace him and restore the original format as The Tonight Show. 2  June 24 â Front Page Challenge, television's longest continuously running panel show, starts broadcasting on the Canadian Broadcasting Corporation network.