The best storyline is the one between Grace and Karen - in regards to why Karen is lying about the availability / suitability of her nephew Sumner. The scene where Karen admits to Grace that she is too good for Sumner - and Grace's facial expression afterwards - is a great Grace/Karen moment. Very funny scene. Will's infatuation with a dog seems very real (remember another episode during Series 1 where the same thing happened) and initially funny - especially as Grace asks Will why is he cooking for a dog. However, constant jokes about 'dogs' become a bit boring and like Jack, we wonder how Will ever got together with Paul.