Should Leno or Conan Host The Tonight Show? The groundwork has been in place for years for Conan O'Brien to take over The Tonight Show from Jay Leno in 2009. But now there's a new twist to the story: Leno doesn't want to leave. Some in the industry are also wondering if Conan's irreverent humor will work in an earlier time slot. Which comedian do you think is more fit to host The Tonight Show?