I believe that Hank Hill is one the most complex and realistic characters in Animation. Although on the surface he appears to be nothing more than a redneck, if you actually watch the show and read between the lines, he's a lot more.

Hank Hill, and by extension King of The Hill as a whole, is at its core about showing that one group is not always right, and one group is not always wrong. It's not just blind Liberal bashing by some angry Texans, or angsty Liberal bawwing like Family Guy, it's somewhere in the middle.

Hank is a man who represents traditional family values. He works a just-above blue collar job, has an ugly wife, and a kid he fails to understand. He enjoys working on his lawn, grilling, and selling propane (and propane accessories).

because he represents traditional values, he often butts heads with newer, more liberal ideas. Now about half the time, he will have a hard time adjusting, but ultimately realize that it isn't that bad, or is even correct. But the other half of the time, he exposes it for the bullshit it is and tries to save those who have been brainwashed.

And that's the thing, Hank isn't a racist or Homophobe, or even a devout Republican. If that was the point of the show, he would have voted for Bush in that one episode. No, Hank is a good man who just has a hard time adjusting.

Hank stands by his family, his friends, and his family values, and this is why he is a good character. He has a hard time understanding his son, like a lot of parents, but ultimately loves him and accepts him for what he is.

When you really get down to it, Hank is so much more than your average sitcom father. Unlike the bumbling Homer, he is a very real man who many people can relate to THEIR fathers. he is the next progression in mature cartoons and sitcoms, a complex character, not a 1 dimensional caricature.

In short, he is the Average Joe the typical person represents, and that's a good thing.