Kirk Ferentz is probably boring as hell, but I'm not sure how you could label him unlikable.
Only one on this list i see and absolutely agree with is Jerry Kill. Bunch of em I don't know enough about.
Harbaugh being on the likable list, even at 25 is hilarious, as well as Saban
That's the other thing about this list... how many people know/care enough about all FBS coaches to make a top 25 most/least likeable?