January 11, 2011
Episode 1 of Season 18 premiered on January 11, 2011
January 18, 2011
Episode 2 of Season 18 premiered on January 18, 2011
February 1, 2011
Episode 3 of Season 18 premiered on February 1, 2011
February 8, 2011
Episode 4 of Season 18 premiered on February 8, 2011
March 1, 2011
Episode 5 of Season 18 premiered on March 1, 2011
March 8, 2011
Episode 6 of Season 18 premiered on March 8, 2011
March 29, 2011
Episode 7 of Season 18 premiered on March 29, 2011
April 5, 2011
Episode 8 of Season 18 premiered on April 5, 2011
April 12, 2011
Episode 9 of Season 18 premiered on April 12, 2011
April 19, 2011
Episode 10 of Season 18 premiered on April 19, 2011
April 26, 2011
Episode 11 of Season 18 premiered on April 26, 2011
May 10, 2011
Episode 12 of Season 18 premiered on May 10, 2011
May 17, 2011
Episode 13 of Season 18 premiered on May 17, 2011
May 24, 2011
Episode 14 of Season 18 premiered on May 24, 2011
May 31, 2011
Episode 15 of Season 18 premiered on May 31, 2011
June 7, 2011
Episode 16 of Season 18 premiered on June 7, 2011
June 14, 2011
Episode 17 of Season 18 premiered on June 14, 2011
June 21, 2011
Episode 18 of Season 18 premiered on June 21, 2011
June 28, 2011
Episode 19 of Season 18 premiered on June 28, 2011
July 12, 2011
Episode 20 of Season 18 premiered on July 12, 2011
July 19, 2011
Episode 21 of Season 18 premiered on July 19, 2011
July 26, 2011
Episode 22 of Season 18 premiered on July 26, 2011
August 2, 2011
Episode 23 of Season 18 premiered on August 2, 2011
August 9, 2011
Episode 24 of Season 18 premiered on August 9, 2011
August 23, 2011
Episode 25 of Season 18 premiered on August 23, 2011
August 30, 2011
Episode 26 of Season 18 premiered on August 30, 2011
September 13, 2011
Episode 27 of Season 18 premiered on September 13, 2011
September 20, 2011
Episode 28 of Season 18 premiered on September 20, 2011
October 4, 2011
Episode 29 of Season 18 premiered on October 4, 2011
October 11, 2011
Episode 30 of Season 18 premiered on October 11, 2011
October 26, 2011
Episode 31 of Season 18 premiered on October 26, 2011
November 22, 2011
Episode 32 of Season 18 premiered on November 22, 2011
November 29, 2011
Episode 33 of Season 18 premiered on November 29, 2011
December 6, 2011
Episode 34 of Season 18 premiered on December 6, 2011
December 20, 2011
Episode 35 of Season 18 premiered on December 20, 2011