Late night talk shows still exist, but their heyday was last century, when millions of viewers would stay up late to watch Johnny Carson, and, later, David Letterman, Arsenio Hall, Jay Leno, and Conan ...

Denzel Washington and Don Rickles both appeared on the Late Show with David Letterman in 2008. Washington is considered one of the best actors of all time, and Rickles one of the best comedic actors ...