May 19, 2007
Episode 1 of Season 4 premiered on May 19, 2007
September 15, 2007
Episode 2 of Season 4 premiered on September 15, 2007
October 1, 2007
Episode 3 of Season 4 premiered on October 1, 2007
November 3, 2007
Episode 4 of Season 4 premiered on November 3, 2007