See item 4 in Jimmy Fallon's jab at David Letterman's retirement for a great laugh.

10. Wants to quit while he’s still able to compete on Dancing With The Stars.
9. Made millions selling crack to Rob Ford.
8. Time slot was getting too “Jimmyesque.”
7. He’s not retiring — he’s “consciously unhosting.”
6. Stop! Hammock time!
5. Hillary/Letterman 2016!
4: After 31 years, finally got through to the Obamacare website.
3. One word: E-LOprah.
2. Jay Leno needs a partner for next season’s Amazing Race.
1. Jimmy Fallon is stealing his bits.