September 20, 2008
Episode 1 of Season 4 premiered on September 20, 2008
September 27, 2008
Episode 2 of Season 4 premiered on September 27, 2008
October 18, 2008
Episode 3 of Season 4 premiered on October 18, 2008
October 25, 2008
Episode 4 of Season 4 premiered on October 25, 2008
November 1, 2008
Episode 5 of Season 4 premiered on November 1, 2008
November 8, 2008
Episode 6 of Season 4 premiered on November 8, 2008
November 15, 2008
Episode 7 of Season 4 premiered on November 15, 2008
November 22, 2008
Episode 8 of Season 4 premiered on November 22, 2008
November 29, 2008
Episode 9 of Season 4 premiered on November 29, 2008
December 6, 2008
Episode 10 of Season 4 premiered on December 6, 2008
December 13, 2008
Episode 11 of Season 4 premiered on December 13, 2008
December 20, 2008
Episode 12 of Season 4 premiered on December 20, 2008
January 10, 2009
Episode 13 of Season 4 premiered on January 10, 2009
January 17, 2009
Episode 14 of Season 4 premiered on January 17, 2009
January 24, 2009
Episode 15 of Season 4 premiered on January 24, 2009
January 31, 2009
Episode 16 of Season 4 premiered on January 31, 2009
February 7, 2009
Episode 17 of Season 4 premiered on February 7, 2009
February 14, 2009
Episode 18 of Season 4 premiered on February 14, 2009
February 21, 2009
Episode 19 of Season 4 premiered on February 21, 2009
February 28, 2009
Episode 20 of Season 4 premiered on February 28, 2009
March 7, 2009
Episode 21 of Season 4 premiered on March 7, 2009