Leon has appeared on numerous television interview programs, concert specials and documentaries.
Leon performed on the Ed Sullivan Show nine times in the early 1960s. His trademark version of O Sinner Man placed him in the ranks of a ‘regular’. He went on to host his own NBC television program, Someone New where he presented a very young Barry Manilow and an even younger Yo-yo Ma, among others, to New York audiences.
Leon has appeared numerous times on the Today Show, the Tonight Show and The Johnny Carson Show.
Since arriving in Canada, Leon has been featured on numerous documentaries an d concert TV specials.