The best statistic that exists about the Jim Tressel era of Ohio State football is how utterly and angrily he destroyed Northwestern football following a loss to the Wildcats early in his tenure.
Following that 2004 debacle, Tressel's Buckeyes played Northwestern four times, winning every game by an average score of roughly 51-9. Remember, this is freaking Jim "Hammer Don't Hurt 'Em" Tressel, the man who never saw a 28-10 score he didn't like. Ohio State fans will rightly have fond memories of his teams grinding Wolverines into dust, but I've always found it incredible that he chose Northwestern as the one team to get all hairy assed about.