A long, long time ago -- three years in fact -- Howard Stern visited 'Late Night With Conan O'Brien' to warn the young host of the peril that lay ahead when he took over 'The Tonight Show' from Jay Leno. After expressing his joy at the then-fresh news of a deal to elevate O'Brien to 11:35, Stern asked: "Do you think that's really gonna happen?"

The NBC host jokingly gave himself a "40 percent" chance of it happening. Stern stuck it to him plain-like: "I don't see this guy leaving and letting you walk in. I'm concerned about you." To back up his concerns, Stern cracked that Leno "is a guy who stares at the wall ... and waits to go to work. He doesn't do anything but work."