Watch Late Show with David Letterman Online - Full Episodes

When David Letterman goes off on a rant, he goes off on a rant. And he often does so with a CBS camera fully trained on him. Wednesday night, he wanted to talk a moment about fracking. Deep, dirty fracking. He wanted to talk all about how fracking is ruining America at its core.

We're never going to hear more debate over who is more "out of touch" than we do during a presidential election. This year, it's once more between the President and a child of privilege of himself. But what does "out of touch" even mean anymore? Let David Letterman explain....

Take away a man's TV show, and he won't forget it: Conan O'Brien showed up on the "Late Show" this week to talk to David Letterman, and very quickly set to mocking Jay Leno. Watch the video here!

Strange but true equation: Mormon presidential candidate, plus underwear, plus sex with interns, equals . . . Sean having something to write about. While nobody knows quite yet what gives with the sudden "Colbert Report" taping cancelations, we know where Jon Stewart was last night: in the midst of a hotly contested conversation with David Letterman Re: Mitt Romney and the virtues of underwear.

That's right. The champagne from the New York Giants' Super Bowl XLVI win has barely warmed to room temperature, but with spring, a young fan's fancy turns to thoughts of the NBA playoffs. What's more important, we need a new sports meme until it's Tebow Time once again. That being said . . . . welcome to the "Linsanity."

With a new deal approaching for David Letterman, so approaches history. If, as expected, CBS offers him another two-year deal soon, Letterman will be guaranteed a total 32-year tenure hosting late-night television, making him the longest running host in history. Previous title holder? His friend and idol, the late Johnny Carson.

Scarlett Johansson was effortlessly charming in discussing her leaked nude photos with David Letterman on the "Late Show," even managing to laugh about the entire situation. Watch a video of ScarJo's interview with Letterman right here!

Well, if it's advice he needed, Justin Bieber certainly could've gone to worse people for advice. David Letterman knows a thing or two about sexy scandals. So when the teen pop star dropped by as his paternity-suit scandal possibly nears an end, he and Letterman talked for a moment about "weasels."

Internet stupidity, it seems, is not limited to people's Facebook statuses. A man posting under the name of Umar al-Basrawi put out a death threat against none other than David Letterman on an extremist website. What could have pushed this man to such extreme anger that he would wish the TV comedian and talk show host dead?

We heard the news today, oh boy. Just as avante-rock band TV on the Radio released a gorgeous new album "Nine Types of Light" - to critical acclaim and a debut at No 12 in the Billboard charts - it announced today that the band's talented bassist and multi-instrumentalist Gerard Smith passed away this morning of lung cancer. He was only 34. Damn. "We are very sad to announce the death of our beloved friend and bandmate, Gerard Smith, following a courageous fight against lung cancer.

Was he stoned? Was he tired? Did he just not care? Ever since The Academy Awards aired, people have been asking questions about James Franco's low-energy performance as host and wondering what went wrong. Franco finally has some answers for us, as he sat down for an interview with David Letterman. "Truthfully, I haven't watched it back," Franco said, according to a report by New York Magazine.

It seems that the late night jokester was the butt of the joke this time. David Letterman and his people have been advertising the fact that Lindsay Lohan was going to be on Thursday’s show and deliver the Top Ten List. The only problem – Lohan is not going to be in New York. Her people didn’t even talk to his people about appearing on the show. The whole thing was a farce from the beginning! Someone from Letterman’s staff is probably getting their butt chewed out over this one.