An Irish actor, born and raised in Dublin, Jason O'Mara turned out more prolific television appearances (in guest spots and supporting turns) than almost any of his contemporaries. Among other assignments, he landed roles on Band of Brothers, Criminal Minds, Men in Trees, and Grey's Anatomy, then rose to broader acclaim as one of the leads, ex-cop turned legal assist Charles Conti, on the popular law drama series In Justice (2006). In 2007, O'Mara tackled a supporting role opposite Milla Jovovich and Ashanti in the gruesome video game adaptation Resident Evil: Extinction. But it was on the small screen that O'Mara really seemed to shine, and after traveling back to the 1970s as the lead in the shortlived police detective series Life on Mars, the increasingly prolific actor ventured even further back in time -- 85 million years to be exact -- with his family to start a prehistoric human civilization in the FOX series Terra Nova. That show, too, was cancelled before it had the chance to gain a loyal following, though O'Mara quickly bounced back with a featured role in the 2012 Katherine Heigl romantic action comedy One for the Money, which found the actor cast as a fugitive cop being pursued by his gorgeous ex -- now a tenacious bounty hunter.

He is not to be confused with the Philadelphia-based jazz musician with the same name.