"The U" was really good, but only about 3rd or 4th on my list. Documentaries designed as love stories drop the greatness down a level. They failed to mention a few key debacles of the Hurricanes, like the '86 and '93 Sugar Bowls. And it's funny how the documentary sort of lamented the arrival of Butch Davis because he didn't promote the thug-ball of the 80s and have Luther Campbell roaming the sidelines. I mean, it's not as if Davis won a championship with one of the greatest college football teams of all time or anything.
Otherwise, for me, the clear number one 30 for 30 was The Two Escobars, a truly stunning documentary that interwove a politics with some fascinating anesdotes (Drug dealers flying in famous soccer players to Colombia for high stakes games was surreal.). The Best that Never Was finishes a close second.
This one on SMU was pretty good, outlining the cheating for those who hadn't known what went on (I did), but did fall into the trap of presenting the "everybody was doing it" defense mechanism too often. Sounds like every kid who screws around in my class and wants a way out of respobility when caught.