I voted other since my favorite show was not listed: South Park!

Can't vote as I love them all. Mostly simpsons, family guy, and american dad... I like to switch it up every now and then.

I don't watch much television, but if I had to pick from those, it would definitely be the Simpsons. That show was on all of the time when I was growing up and it was considered "bad"... But compared to Family Guy and American Dad, it's tamer and actually funny to me at times.
King of the Hill was also on television a lot when I was younger, but I didn't really watch it much.