NEW YORK (AP) - Danica McKellar's busted rib and Amy Purdy's back spasms were great for ratings. Nearly 16 million people watched "Dancing With the Stars" last week. That's the most-watched episode of a reality show this season. It's good enough for third place in the ratings behind "NCIS" and "The Big Bang Theory." The two episodes of "The Voice" rank sixth and eighth. "American Idol's" performance show came in 19th place with fewer than nine million viewers. The results show didn't make the top 20.