Born in Dublin, Ireland in 1965. Clarke moved to New York in 1986, where he worked as an illegal immigrant in various jobs ranging from landscape gardener to limousine driver until he gained full resident status in 1992. A late bloomer, Clarke's acting career began modestly in 1994 when he began to study acting at David Mamets, Atlantic Theatre Company. Getting a foot in the door in New York proved difficult so Clarke kept himself busy by appearing in more than a dozen student and indie shorts including the multiple award-winning The Last Actor and Fall from Grace.

Tired of waiting around for the elusive big break and with the much published success of low budget hits like Clerks and The Brothers McMullen, Clarke decided to take the self reliant route and make his own feature. Production began on Beyond the Pale in December 1996, it took four years to take it from script to screen; in addition to producing the film, Clarke co-wrote the script and played the lead role. Beyond the Pale was a modest commercial success in Ireland, Australia and the UK and won awards at the, Houston and Arizona film festivals. Clarke's performance in Beyond the Pale Led to roles in, The Magnificent Ambersons (2002) for NBC and the award-winning comedy, Stay Until Tomorrow (2004). Clarke is currently working on several projects, including Brother James, Canal's End, and the reality challenge documentary, Life Begins at? (www.lifebeginsat.com)