The Tonight Show with Conan O'Brien is an American late-night talk show that featured Conan O'Brien as host from June 1, 2009, to January 22, 2010, as part of NBC's Tonight Show franchise. O'Brien had previously hosted NBC's Late Night with Conan O'Brien, which followed The Tonight Show with Jay Leno for 16 years, until his brief succession after Leno. At only 146 episodes (145 aired) over the course of seven months and three weeks, it is the shortest-running iteration in the sixty-year history of The Tonight Show.