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"Megan Mullally has signed up for a guest role in Up All Night. The actress will appear in one episode of the NBC comedy after the holidays, E! Online claims. She is expected to play Shayna Mund, who used to be mentored by talk show host Ava (Maya Rudolph). Shayna now has her own show and is willing to go to great lengths to beat her rival, including stealing her ideas. Rudolph recently insisted that her character is not based on Oprah Winfrey. Up All Night, which has been picked up for a full season, airs on Wednesdays at 8/7c on NBC. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/tv/ustv/news/a351055/megan-mullally-to-guest-in-up-all-night/>