King of the Hill is definitely one of the more underrated animated series out there. I actually think it's daring that it doesn't aim for 'gut busting' humor the way most American comedies do, and it's very nuanced in the way it portrays its characters.

On the one hand it's under appreciated, on the other as cartoon with a complex view of american life that isn't going for the "big laughs" I'm surprised it wasn't cancelled in a week.