January 25, 2007
Episode 1 of Season 4 premiered on January 25, 2007
February 8, 2007
Episode 2 of Season 4 premiered on February 8, 2007
February 22, 2007
Episode 3 of Season 4 premiered on February 22, 2007
March 8, 2007
Episode 4 of Season 4 premiered on March 8, 2007
March 22, 2007
Episode 5 of Season 4 premiered on March 22, 2007
April 19, 2007
Episode 6 of Season 4 premiered on April 19, 2007
May 3, 2007
Episode 7 of Season 4 premiered on May 3, 2007
May 31, 2007
Episode 8 of Season 4 premiered on May 31, 2007
June 14, 2007
Episode 9 of Season 4 premiered on June 14, 2007
June 28, 2007
Episode 10 of Season 4 premiered on June 28, 2007
September 27, 2007
Episode 11 of Season 4 premiered on September 27, 2007
October 11, 2007
Episode 12 of Season 4 premiered on October 11, 2007
October 25, 2007
Episode 13 of Season 4 premiered on October 25, 2007
November 8, 2007
Episode 14 of Season 4 premiered on November 8, 2007
November 22, 2007
Episode 15 of Season 4 premiered on November 22, 2007
December 6, 2007
Episode 16 of Season 4 premiered on December 6, 2007
December 20, 2007
Episode 17 of Season 4 premiered on December 20, 2007