I downloaded all the historical data from covers (did not include the current 08-09 season) and deleted all the games where there are either no total and/or spread lines. I also did not include any tournament games.
there are 263 regular season games in the data set. I am going to post some charts here for you guys to see. i'll cut and past the data series in the following post, so if you guys want to play around with it.