Sean Patrick Hayes (born June 26, 1970) is an American actor, comedian, and producer. He is best known for playing Jack McFarland on the NBC sitcom Will & Grace, for which he won a Primetime Emmy Award, four SAG Awards, and one American Comedy Award, and earned six Golden Globe nominations. He also runs a television production company called Hazy Mills Productions, which produces shows such as Grimm, Hot in Cleveland, The Soul Man, and Hollywood Game Night. Since July 2020, he has co-hosted the comedy podcast SmartLess.
He is known for his appearances in films such as Billy's Hollywood Screen Kiss, Cats & Dogs, Pieces of April, The Cat in the Hat, Win a Date with Tad Hamilton!, The Bucket List, & The Three Stooges.
He is also known for his work on Broadway such as An Act of God and Promises, Promises, where he played Chuck Baxter and received a nomination for Tony Award for Best Performance by a Leading Actor in a Musical. He hosted the 64th Tony Awards, for which he was awarded a Primetime Emmy Award for Outstanding Special Class Program.
Hayes was born in Chicago, the youngest child of five of Mary Hayes (1939-2018), the director of a non-profit food bank called the Northern Illinois Food Bank, and Ronald Hayes, a lithographer. He is of Irish descent and was raised as a Roman Catholic in the Chicago suburb of Glen Ellyn, Illinois. His father, an alcoholic, left the family when Hayes was five years old, leaving his mother to raise him and his siblings. He has been estranged from his father for many years.

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