I really start off loving the show, so that although season 4 is just mediocre and not really terrible, I ended up hating it just because of what it could have been. The jokes in season 4 fall flat, and they seem to have thrown out everything good about the first couple of seasons, and tried to make an entirely new show. The subtlety has also gone away, which I would argue was the best part of the show (unlike sitcoms where, once you notice the background laughter, it completely messes up the experience).