“IDOL” AND “DANCING” GO HEAD-TO-HEAD

American Idol once again dominated the ratings Tuesday night, counting 21.33 million viewers. The figure, however, was down 16 percent from the comparable night a year ago when Idol drew 24.41 million viewers. ABC gave it tough competition. Its Dancing with the Stars results show finished in second place with 14.09 million viewers. That was followed by an episode of Lost, which drew 10.06 million viewers. CBS was also a contender despite airing a full night of reruns, including NCIS (10.69 million), NCIS Los Angeles (10.15 million) and The Good Wife (8.07 million.) At 10:00 p.m., ABC brought its sci-fi drama V back, with 7.29 million tuning in. It landed in second place behind CBS’s The Good Wife with 8.07 million viewers.