
Even though the season is “officially” over, technically the ratings never stop pouring in, so we will continue to track the season to date changes from 2006-7 to 2007-8 until the actual end of the season in September.
Our chart shows broadcast network prime-time season to date average prime-time viewership for the 2007-8 season compared to the 2006-7 season.
Nielsen TV Ratings Data: ©2008 Nielsen Media Research, Inc. All Rights Reserved.

Kind of amazing that even though CBS had the Super Bowl last season, the CW's year-to-year percentage drops are STILL bigger. IMHO.
Travis, I agree. FYI, The best we can figure is that about ~5% of Fox's increase and ~5% of CBS's viewer decrease is due to the Super Bowl, but our methods are crude and involve removing the entire weeks worth of data [for the Super Bowl week] from their seasonal changes.