Over two decades after Johnny Carson blackballed Joan Rivers from the afterhours circuit, the Piece of Work subject returned to the format to remember the King of Late Night, badmouth Johnny's successor and sprinkle her late husband's ashes on David Letterman's set. Elsewhere, Christina Hendricks debuted her Mad Men Barbie, Kevin Connolly explained how to direct a porn star and Jay Leno dedicated his monologue to Lindsay Lohan.
4. The Christina Hendricks Barbie
Last night on Late Night, the Mad Men actress brought Jimmy Fallon up to speed on the AMC series and introduced her very own Mattel figurine.
3. Kevin Connolly's Adventures in Directing Adult Film Actresses
The Entourage star told Jimmy Fallon all about directing a racy sex scene this season featuring real-life porn star Sasha Grey, who plays Vince's girlfriend.
2. Jay Leno on Lindsay Lohan's Prison Sentence
Lindsay Lohan may be locked up for the next two weeks but she is the topic of many-a-Tonight Show monologue jokes.
1. Joan Rivers Returns to Late Night
After a nearly 23-year exile from late night television, Joan Rivers made a historically significant appearance on the Late Show with David Letterman last night.