Barbara Walters will serve as host of the 2-hour collaboration between ABC News and People Magazine. It will air Sept. 18.
More than 1 million votes were cast and the results will be announced on the program, which will include fresh interviews with stars, directors and producers such as Desi Arnaz Jr. and Lucie Arnaz, Carol Burnett, Tim Conway, Tina Fey, Mariska Hargitay, Florence Henderson, Christina Hendricks, Ron Howard, Warren Littlefield, Lorne Michaels, Kermit and Miss Piggy, Phylicia Rashad, Rob Reiner, Ryan Seacrest, Keith Thibodeaux, Betty White and Dick Wolf.
"The special will also include classic clips from America's favorite shows, as well as out-takes, screen tests and rare behind-the-scenes footage," a synopsis said. "In addition, a panel of pop culture and television experts, including several editors and writers from People [magazine], will weigh in with their thoughts and memories."