Tonight, the Top 20 dancers - 10 males and 10 females - who survived the Las Vegas callback auditions will compete for viewers' votes for the first time. See who keeps strutting down the path to the championship and who trips up in a special two-hour episode of SO YOU THINK YOU CAN DANCE.

The top 18 contestants try to impress the judges with their performances. See who dances into America's hearts and who trips up in this special two-hour episode of SO YOU THINK YOU CAN DANCE.(TV-PG D, L).