The Tonight Show is a late-night television variety program that has aired on the NBC broadcasting network since 1954. Previously hosted by Steve Allen, Jack Paar, Johnny Carson, Jay Leno, and Conan O'Brien. In 2014, Jay Leno left The Tonight Show after his second tenure since his return after the 2010 conflict where Conan O'Brien left due to disagreements. In February 2014, Jimmy Fallon took over as host. The show is now The Tonight Show with Jimmy Fallon.