As part of O'Brien's 2004 contract renegotiation with NBC, he was tapped to replace Jay Leno as host of "The Tonight Show" five years later, in the summer of 2009. O'Brien's last "Late Night" was taped and aired on February 20, 2009. He indeed succeeded Leno and renamed the show "The Tonight Show with Conan O'Brien" on June 1, 2009, and resigned as host just over seven months later, a result of the 2010 Tonight Show conflict.