Conan O'Brien will be a guest on 'The Tonight Show,' 14 years after his acrimonious exit

Does time and a new host heal all wounds? Fourteen years after Conan O’Brien left “The Tonight Show” to make way for the return of Jay Leno, the comedian will appear on the late-night program as a guest. O’Brien will be on the April 9 show to promote his new travel series “Conan O’Brien Must Go” for Max. Jimmy Fallon took over for Leno as host in 2014. O'Brien moved from NBC's “Late Night” to its flagship show for seven months beginning in 2009 before departing in one of the more acrimonious television transitions.