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

NEW YORK, May 20 (Reuters) - Comedian David Letterman will sign off for the last time on CBS's "Late Show" on Wednesday, concluding a 33-year career on late-night television with a show that promises ...

The late-night TV business is in an interesting position right now, as some entertainment companies are shifting away from the long-used model. Over the past few years, networks have either reduced ...