The following is the 2008–09 network television schedule for the six major English language commercial broadcast networks in the United States. The schedule covers prime time hours from September 2008 through August 2009. The schedule is followed by a of returning series, new series, and series cancelled after the 2007–08 season. The schedule omits the Public Broadcasting Service (whose programming is listed here). New fall series are highlighted in bold. Each of the 30 highest-rated shows is listed with its rank and rating as determined by Nielsen Media Research.