Jimmy Fallon's Most Memorable Roles: A Decade of Laughs.

NBC will air a two-hour special celebrating Jimmy Fallon's 10-year anniversary as host of 'The Tonight Show'. Fallon's show, which has been a staple of late-night TV since 1954, has evolved with each new host, including Steve Allen, Johnny Carson, and Conan O'Brien. Fallon's approach combines Gen X nostalgia, viral internet culture, and a dash of "what will Jimmy do next?" The future of 'The Tonight Show' is uncertain, as the show's focus on Generation X and younger audiences may change the landscape of late-night TV.