[2] After the novitiate, he chose to return to New York and train as a stage actor, studying under Robert Patterson.
[citation needed] With friends, Kelleher founded the Colony Theatre and served as its Artistic Director, staging the work of new playwrights as well as classics.
[citation needed] His acting career has included guest appearances on numerous TV shows, and a turn as the resident villain on NBC's Sci-Fi series, Dark Skies.
[1][4] In keeping with his faith, in 2011 he wrote and produced, The Creed: What Christians Profess, and Why it Ought to Matter, a documentary film for First Things magazine featuring scholars and thinkers.
[2] He also serves as New Media Editor for First Things, where he writes on topics related to religion, politics and culture.