Here's a mess o' speculation on what Jay Leno will do when his contract to host The Tonight Show is up. I don't know what he has in mind but I know what I'd do in his position: Just wait and see. The landscape of late night is changing. Viewership is down. (Last week, Letterman had one of his worst weeks ever, ratings-wise.) The parlay of Conan O'Brien and Jimmy Fallon at NBC will change things even more. Five years from now, that daypart will look very different from the way it does now, with a lot of different players. Jay has the opportunity to go out on top and spend a few years doing his stand-up act around the country while he waits for late night to redefine itself. And then he could figure out a role for himself in it and probably write his own ticket for that job. Whatever it is.