 He has served as editor of The Reader's Catalog (1987–1991), a faculty member of The Writing Program at The New School, a contributing editor at Open City, and was a member of the selection committee for The New York Film Festival in 2003.Erudite but playful, O’Brien’s style as an essayist and reviewer is unique.Highly associative in approach, his dense, highbrow prose is often brought to bear upon the worlds of low-budget exploitation films and pulp fiction as well as more upscale and respectable venues of the cinematic, theater, literary, or popular music worlds.