O’Brien became a household name as the host of Late Night With Conan O’Brien since 1993, serving as the lead-out for Leno’s Tonight Show, which debuted a year earlier. As both shows became ratings ...
The Tonight Show debuted in 1954 as Tonight and was hosted by Steve Allen until 1957. Jack Parr took over until 1962, followed by Johnny Carson until his retirement in 1992.