Donny Osmond, who had the advantage of spending a lifetime as a performer and commanding an enormous fan base, danced off with the top award, a silver disco ball, on the season finale of ABC's Dancing With the Stars Tuesday night. He beat out singer Mya and Osbourne family member Kelly. The show had been expected to draw the biggest ratings of any nonsports show of the season, but while its ratings were impressive, they were not overwhelming. The two-hour finale averaged 19.19 million viewers, but an hour earlier on CBS, the newly empowered NCIS beat that figure with 20.26 million, and its spin-off, NCIS: Los Aangeles gave Dancing a run for its money by attracting 17.18 million viewers.