I chose 2007 KU, too.
Even as they had a great season, I think most people didn't think they'd have even beaten a down, .500 season-Nebraska team. It was a case of "okay, okay, you had your fun, but KU can't beat Nebraska." The Jayhawks broke through that mental obstacle by hanging 76 on the Huskers.
Their only blemish was a 1-score game vs top-5 Mizzou.
.
Their season broke my brain.