John's first movie appearance was with Miguel Ferrer and Terrance Knox in the independent film Truckin' Buddy McCoy.
John's first television appearance was in Cheers in 1982.
When asked what his attraction to working in as many forms, John replies, "Diversify, Diversify, Diversify," When asked why he works on so much television, he replies, "Money, Money, Money!"
John frequently appears in film and in many television movies so to enable him financial fluidity to create his, not necessarily for profit, performance art.
John also works frequently in theater. A sampling of past work includes: A Perfect Wedding (Kirk Douglas Theater, LA), Applause (Reprise, UCLA), Noises Off (Cape Playhouse, Dennis, Mass), On the Jump (South Coast Rep), Small Craft Warnings, Cringe, The Berlin Circle (Evidence Room/LA), The Mystery of Irma Vep (Tiffany Theater/LA) & Tony Kushner's adaptation of The Illusion (LATC) and The Granny (The Old Globe, San Diego).
John often works as a performer in world-renowned video artist, Bill Viola's pieces. He was recently featured in Mr. Viola pieces at The Getty Center (LA), The Guggenheim (NY & Berlin), The Tate Museum (London) the Venice Biennalle and is currently on screen at the National Art Gallery (London).
John was born in the Year of the Hare.
John's past body of solo work includes: Nothin' Beats P****, Mud in your Eye, Dirt, me, A Snowball's Chance in Hell, Blessed are all the Little Fishes, PsychoOpera and I Got the He-be-she-be's. A sampling of past performance venues includes; the ICA (London), ICA (Boston), The Public Theater, The Guggenheim Museum, PS-122, LaMama Theater, Dixon Place & Joe's Pub (NYC), The Getty Museum, Cal Plaza, MOCA & The Evidence Room (LA).
John's latest piece, Johnny's Got A Gun premieres this summer at the Evidence Room, LA and will move to NY in the fall.
John has won 2 Backstage West awards for outstanding performances onstage.
John has won 6 LA Weekly awards for outstanding performances onstage.
John has won 8 DramaLogue awards for outstanding performance.
John has won 3 LA Critics Circle Awards for outstanding performance.
John has won numerous grants, among them 2 NEA's, a Getty Fellowship, a Franklin Furnace & Jerome Foundation Fellowship, a Rockefeller/NEA- Interarts grant and LA Cultural Affairs funding.
(May 2005): John played Duane Fox in Applause musical by Charles Strouse, Lee Adams, Betty Comden and Adolph Green, based on the film All About Eve and the original story by Mary Orr (Reprise! at UCLA's Freud Playhouse, Westwood, California, USA).
The last eight series on which John has made guest appearances were all cancelled: Enterprise (2001), Joan of Arcadia (2003), She Spies (2002), The District (2000), The Fugitive (2000), The Fighting Fitzgeralds (2001), Just Shoot Me! (1997) and Family Law (1999).
John is best known by Star Trek fans as Silik, the Suliban leader in Enterprise - and Chairman Koval (DS9), the Romulan leader of the Tal Shiar.
John is one of only three actors to have starred in all incarnations of the modern Star Trek TV series, namely TNG, DS9, Voyager and Enterprise, albeit in a variety of different roles.
John is a successful performance artist also known as one of the infamous 'NEA Four'; along with Karen Finley, Tim Miller and Holly Hughes; whose lawsuit against the National Endowment of the Arts achieved notoriety in the early 90's.