Played "Pony" in premier run of Eric Bogosian's "SubUrbia" at Lincoln Center's Mitzi Newhouse Theater in NYC
In June of 2003, Zak was in the production of "The Secret Order" at the Laguna Playhouse in Laguna Beach, California. He played Dr.William Shumway, a scientist who claimed that he found a cure for cancer.
(2005, December) Appeared in the Patrick Hamilton play "Rope" at off-Braodway theater The Zipper, New York, New York.