From Wikipedia, the free encyclopedia. Denise Michelle Crosby (born November 24, 1957) is an American actress best known for portraying Security Chief Tasha Yar on Star Trek: The Next Generation. She is also known for her numerous film and television roles, for starring in and producing the film Trekkies, and for being the granddaughter of Bing Crosby. Description above from the Wikipedia article Denise Crosby, licensed under CC-BY-SA, full list of contributors on Wikipedia
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