The first season of the show was released in 2004.

Recently, the entire second season has been released on a 4-Disc set.

The complete second season was released on May 20, 2011.

The second season will be released on March 19, 2013.

The third and final season will be released on March 12, 2013.

The third and final season will be released on June 4, 2013.

In June 2006, the entire second season of the series was released.

The second and final season was released on April 24, 2012.

The second and final season was released on April 27, 2010.

The third and final season was released on October 4, 2011.