Alrighty, here are the links to my data. They're on Google doc pages, but you'll want to download them in their Excel form. I've included a sheet in each file labeled "key to columns" that details what the column headings mean. In general, columns in blue are related to the home team (or primary team), while columns in red are related to their opponents. Other colors are used to denote like columns.
There's three files:
Rankings 1998-2010 (3.7mb): this file has all the AP, Coaches, BCS, and Harris rankings, votes, and first-place votes from 1998 on. Also included are W-L records for the full season & gametime.
Game Data 1998-2010 (29.0mb): every game including rankings, spread lines, ncaa stats (from 2000-on), and a bunch of other stuff I found useful. This is the big one - 14 individual sheets.
Team Data 1998-2010 (3.9mb): every team's full season including all of the same data in the game files and then some.
If you find an incorrect stat or anything wrong, just email me and I'll correct it and put a note here so that everyone can update. If you have any questions about any of it, just let me know.
Update 7/11/11: link #3 now goes to a new version of the team data with corrected stats.