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Glenn Franklin Howerton III (born April 13, 1976) is an American actor of television and film. He is best known for his role as Dennis Reynolds on FX's It's Always Sunny in Philadelphia (on which he is also a writer and executive producer). He also played Corey Howard on the short-lived 2002 sitcom That '80s Show and appeared in the 2008 horror film The Strangers. Howerton was born in Japan, the son of American parents Janice and Glenn Franklin Howerton, Jr., a fighter pilot. Howerton grew up in London, South Korea, and Montgomery, Alabama. He graduated from Jefferson Davis High School in... MORE

Glenn Franklin Howerton III (born April 13, 1976) is an American actor of television and film. He is best known for his role as Dennis Reynolds on FX's It's Always Sunny in Philadelphia (on which he is also a writer and executive producer). He also played Corey Howard on the short-lived 2002 sitcom That '80s Show and appeared in the 2008 horror film The Strangers. Howerton was born in Japan, the son of American parents Janice and Glenn Franklin Howerton, Jr., a fighter pilot. Howerton grew up in London, South Korea, and Montgomery, Alabama. He graduated from Jefferson Davis High School in Montgomery, then went to New World School of the Arts in Miami, Florida for two years before attending Juilliard School in New York City. While earning his degree, he worked as a drama teacher during his summers at French Woods Festival of the Performing Arts in Hancock, New York. On September 8, 2009, he married actress Jill Latiano, who guest-starred on an episode of It's Always Sunny in Philadelphia. They have a son, Miles. Howerton has guest-starred on ER as Dr. Nick Cooper (six episodes in 2003) and had small roles in the films Serenity (2005), Must Love Dogs (2005), Two Weeks (2006) and The LESS