So tonight's his last night of The Tonight Show.
For those who are not in the know:
Conan got his dream job since he was a kid as the host of The Tonight Show. Leno got a new show after he lost The Tonight Show, coming on at 10:00.
Ratings tanked.
Leno was not happy and wanted The Tonight Show back.
NBC obliged without giving Conan a chance, breaching Conan's contract and forcing him out of a job.
Conan has been causing NBC as much trouble as physically possible in an act of revenge. This involves VERY expensive stunts (buying most expensive car in the world, dressing it up like a mouse, then buying the song "Satisfaction" by the Rolling Stones to play whenever the car gets on the air, for example) for the amusement of the general public.
NBC pays Conan $45 million for breach of contract, PLUS his staff $12 million.
Everybody hates Leno because he's a douche for ruining not one, but TWO Tonight Show careers (David Letterman and Conan O'Brien).

Anyway, tonight's Conan's last show. Who's going to be watching with me to say good-bye to CoCo?