Complex sentence: It debuted on October 16,2006, and ended its first season on January 22,2007; the second season premiered on August 26,2007, and ended on March 23,2008.
Split into simpler sentences: It debuted on October 16,2006 and its first season ended on January 22,2007. The second season premiered on August 26,2007 and ended on March 23,2008.