Kimmel, Fallon, Conan and now Colbert. All of them have one thing in common: They are late night TV show hosts. But as we said goodbye to David Letterman this past week, we also said goodbye to the last of his kind.
You see, Letterman is the last host to appear on air before the era of the Internet. Letterman debuted in 1982 - long before AOL, MySpace, even Facebook.
Nowadays, hosts like Kimmel and Fallon have a strong online presence, with spots like "Celebrities Read Mean Tweets" and the "I ate your Halloween candy" stunts that quickly go viral. Letterman hasn't had as much viral success.
In fact, when you compare the numbers, Letterman's YouTube page has close to 217,000 subscribers. Jimmy Kimmel has 5.9 million and Jimmy Fallon has 7.8 million.
Also by comparison, the Jimmys usually post skits, whereas Letterman's videos are often clips from on-air interviews.
Not that there's a problem with that. I just wanted to point out that while there may never be another Letterman, there certainly won't be another host with pre-Internet experience on their resume.