A chance meeting with Alan Ladd led to a film career for Rory Calhoun, a rangy, likable leading man who started out billed as Frank McCown before settling on his permanent moniker. Best remembered for his work in the Westerns and action pictures, he acted in a wide variety of movies, portraying eligible bachelors in modern-day comedies like "How to Marry a Millionaire" (1953) and "Ain't Misbehavin'" (1955), as well as venturing into period fare for "The Colossus of Rhodes" (1961) and the title role in "Marco Polo" (1962). Calhoun's cowboy credits included the comedy-Western, "A Ticket to