There were previous hosts of "The Tonight Show," TV pioneers who made their mark on the burgeoning late-night talk show form.

On May 22, 1992, America bid goodnight for a final time to the man who made a must-do out of staying up late. Johnny Carson, the “King of Late Night,” wrapped up his time as host of NBC’s The Tonight ...

Bill Scheft worked on David Letterman's late-night shows longer than many of their viewers had been on the planet — 24 years, or the second-longest tenure of any writer at CBS's "Late Show" or NBC's ...