LOS ANGELES - Howard Keel, the broad-shouldered baritone who romanced his way through a series of glittery MGM musicals such as "Kiss Me Kate" and "Annie Get Your Gun" and later revived his career with television's "Dallas," died Sunday. He was 85. Keel died Sunday morning of colon cancer, according to his son, Gunnar. Keel starred in Rodgers and Hammerstein musicals in New York and London before being signed to an MGM contract after World War II. The timing was perfect: He became a star with his first MGM film, playing Frank Butler to Betty Hutton's Annie Oakley in "Annie...