Eleven more celebrities take to the dance floor, paired with their professional dancer partners, in the fourth season of the popular competition series. After spending the week training, the pairs perform choreographed dance routines that, as in past seasons, are judged by a panel of dance experts and then voted on by viewers. The scores are combined and the outcome is announced during a results show. The lowest-scoring pair is eliminated each week until a winner is determined. This year's celebrities include retired NBA player Clyde Drexler, actor John Ratzenberger, singer Billy Ray Cyrus and Olympic speedskater Apolo Anton Ohno.