First there was Biggie and 2 Pac, then Nicki Minaj and Mariah Carey, now it's Jimmy Kimmel v Jay Leno in the battle or celebrity feuds that people are gradually learning not to care about. 

"As a comedian, you can't not have disdain for what he's done: He totally sold out," Kimmel tells Rolling Stone. "He was a master chef who opened a Burger King." Kimmel will now be competing with David Letterman for viewers in his new time slot, but has only respect for that particular elder. "If I beat David Letterman in the ratings, does that mean I'm better than Letterman?" Kimmel asks aloud. "No f--ing way." Jimmy has some odd opinions on Leno; opinions which seem to collide. He said: "Jay Leno is not going to be able to stay on television forever, and obviously Jimmy Fallon is the heir apparent. And [Fallon is] doing a great job, so it makes sense people would talk like this. That said, you can never count Jay out. He seems to pop up just when you think he's dead -- he comes alive and he's got a hatchet."

Letterman's views on Leno seem a little more reserved, and tongue in cheek, but then again, he is a veteran in the game. "He's an unusual fellow. I've never met anyone quite like Jay," Letterman said. "And I will say, and I'm happy to say, that I think he is the funniest guy I've ever known. Just flat out, if you go to see him do his nightclub act, just the funniest, the smartest, a wonderful observationist and very appealing as a comic. Therefore, the fact that he is also maybe the most insecure person I have ever known -- I could never reconcile that." (New York Daily News).