Jenny McCarthy and Fergie host a tribute to Dick Clark (1929-2012), who kicked off his "Rockin' Eve" celebrations in 1972 and was instrumental in launching the careers of many successful singers. Performers include Neon Trees and Carly Rae Jepsen in New York, and Flo Rida, Justin Bieber, Ellie Goulding and Jason Aldean in Los Angeles. Ryan Seacrest makes a special appearance.