February 4, 2007
Episode 1 of Season 21 premiered on February 4, 2007
February 18, 2007
Episode 2 of Season 21 premiered on February 18, 2007
May 21, 2007
Episode 3 of Season 21 premiered on May 21, 2007
October 15, 2007
Episode 4 of Season 21 premiered on October 15, 2007
October 21, 2007
Episode 5 of Season 21 premiered on October 21, 2007
October 28, 2007
Episode 6 of Season 21 premiered on October 28, 2007
November 4, 2007
Episode 7 of Season 21 premiered on November 4, 2007
November 11, 2007
Episode 8 of Season 21 premiered on November 11, 2007
November 18, 2007
Episode 9 of Season 21 premiered on November 18, 2007
November 25, 2007
Episode 10 of Season 21 premiered on November 25, 2007
December 2, 2007
Episode 11 of Season 21 premiered on December 2, 2007