I started watching this a year or two ago and found it boring. My friend recommended it to me recently when we were talking about Blades of Glory (Will Arnett was a supporting cast member with his then-wife Amy Poehler). I gave it another try. I love this show. Like others have said, it is understated. You get to like the characters, especially Chip, in spite of his gross imperfections. Kudos to Will Arnett. He is a great actor. He is also a talented writer.
Unlike the other comments here, I totally identify with the younger women who gravitate to Chip. He is handsome and sexy, not to mention his voice. Remember these are women with tons of baggage and probably a daddy complex.