He studied Spaghetti Westerns and specifically director Sergio Leone. He has written a very popular biography of Leone, "Something To Do With Death" (2000); helped run the Los Angeles-based Gene Autry Museum's exhibit on Leone in 2005; and appeared in numerous documentaries about Leone and his films, particularly the DVD documentaries of "Once Upon a Time in the West" (1968). He also provided audio commentaries for the special edition DVD releases of "A Fistful of Dollars", "For a Few Dollars More", "Once Upon a Time in the West" and "The Colossus of Rhodes".