Joan Rivers – The Tonight Show Starring Johnny Carson
Joan Rivers was always known for her crass sense of humor, and the late comedian was a permanent guest on The Tonight Show with Johnny Carson. Nevertheless, their famous friendship came to an abrupt end when she secured her own show on Fox. Joan Rivers made history as the first female host of a late-night show, only to experience a disappointing outcome as it ultimately flopped. It also resulted in Carson banning her from his show.
The intensity of the situation was such that even when Jay Leno assumed control in 1992, the ban remained in effect. In 2014, the ban was lifted when Jimmy Fallon took over.