Harry Julius Shearer (born December 23, 1943) is an American actor, comedian, musician, radio host, writer, and producer. Born in Los Angeles, California, Shearer began his career as a child actor. From 1969 to 1976, Shearer was a member of The Credibility Gap, a radio comedy group. Following the breakup of the group, Shearer co-wrote the film Real Life (1979) with Albert Brooks and worked as a writer on Martin Mull's television series Fernwood 2 Night.

Shearer was a cast member on Saturday Night Live between 1979 and 1980, and 1984 and 1985. Shearer co-created, co-wrote and co-starred in the film This Is Spinal Tap (1984), a hit satirical rockumentary. In 1989, he joined the cast of the animated sitcom The Simpsons, providing voices for characters including Mr. Burns, Waylon Smithers, Ned Flanders, Reverend Lovejoy, Lenny Leonard, Kang, Principal Skinner, Kent Brockman, Otto Mann, Scratchy, and formerly Dr. Hibbert. Shearer has appeared in films including The Truman Show (1998) and A Mighty Wind (2003), and has directed two, Teddy Bears' Picnic (2002) and The Big Uneasy (2010). Since 1983, Shearer has been the host of the public radio comedy/music program Le Show, incorporating satire, music, and sketch comedy. He has written three books.

Shearer has won a Primetime Emmy Award and has received several other Emmy and Grammy Award nominations. He has been married to singer-songwriter Judith Owen since 1993. He became an artist in residence at Loyola University, New Orleans in 2013.

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