He was born in Pasadena CA, but grew up in nearby Whittier.

Miller has developed shows based on his personal life as a gay man and as an activist. A member of ACT UP and other campaigning organizations, Miller has participated in numerous demonstrations to call for funding of AIDS research and treatment and to promote equal rights. His civil disobedience has led to his arrest on several occasions.

Career

Miller's interest in performance began in high school, where he took classes in theater and dance. He played the lead role of John Proctor in Lowell High School's production of "The Crucible" by Arthur Miller. At nineteen he moved to New York and studied dance with Merce Cunningham.

In 1980 Miller joined with Charles Moulton, Peter Rose and Charles Dennis to found P.S. 122, a space for performance art. The name derives from the former school building that houses the project.

In 1987 Miller returned to California and with Linda Frye Burnham founded another performance space, Highways, in Santa Monica.

In 1993 Miller was featured in the episode of The Larry Sanders Show called The Performance Artist. He played himself as the titular performance artist, who appears as a guest both on Larry Sanders' show and on The Tonight Show with Jay Leno performing a portion of My Queer Body.

In 1997 Miller published Shirts & Skin, a compilation of personal stories that he had told in his shows over the previous decade. He also launched a show of the same name.

Miller took on a new topic, immigration rights for gay and lesbian partners of American citizens, in Glory Box (1999). The immigration issue is a personal cause as Alistair McCartney, his partner since 1994, is Australian.

In 2002 Miller published Body Blows, a collection of scripts from six of his shows with associated essays.

Miller returned to the theme of the problems of Americans with same-sex life partners in "Us" in 2003. The title refers both to his relationship with McCartney and to the U.S., whose laws could prevent them from being together.