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About Mamma Mia
"Mamma Mia" is the 21st episode of the third season of the American television comedy series 30 Rock, and the 57th overall episode of the series. It was written by co-executive producer Ron Weiner and directed by series producer Don Scardino. The episode originally aired on NBC in the United States on May 7, 2009. Guest stars in this episode include Alan Alda, Steve Buscemi, Stuart Margolin, Keith Olbermann, Clayton Dean Smith, and Michael Benjamin Washington.
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