"Guardians of the Galaxy"'s James and Sean Gunn Have 3 Other Siblings in Hollywood

Matt Gunn was born in April 1972, and graduated from St. Louis University High School in 1990. He started his career as a writer in the late 1990s with the film, "Man About Town," and is most known for his longtime comedic and political writing on HBO's "Real Time With Bill Maher," which earned him a Writers Guild of America Award for outstanding comedy/variety talk series.