On film, in addition to the aforementioned role in Love! Valour! Compassion! Hickey played the lead in the 1998 independent film Finding North and played Jack Dunphy in the 2006 Truman Capote biopic Infamous, along with supporting roles in a number of other films, including The Ice Storm. Hickey's best-known television role is perhaps that of Philip Stoddard on the short-lived gay-themed ABC sitcom It's All Relative.