Did you notice how his overeater friend recommended the colonic and then everything went sideways when he tried it? And in the preview for next week the same friend recommends shaving his balls, to disastrous results. I can see that as an impetus for humor in the show, that he is always getting into bad situations after following this one friend's ideas.
I agree with a previous post about how it was sad the cop friend had his table set for two.
The gal pal plays sadness (expressed as anger) very well too. Was the critical dad her biological father and the one played by that guy from Frasier her "other dad"?
The show really encourages the viewers to question their own attitudes about weight, such as when the secretary said it was very iffy to call a 5'9" woman who weighs 140 lbs. not fat. Or the very fact that the gal pal is so beautiful and we have to sit and think about whether we'd still define her as beautiful if she weren't that skinny.