Got the first series of this on the way. I seem to remember from what I saw that it was pretty middle of the road, but really solid; and Louis-Dreyfus was of course top notch. Was surprised to see this went for about five seasons, which is good going, it seemed to vanish from my radar and I assumed it had died pretty quickly.
I wanted to get hold of her other sitcom, 'Watching Ellie', that ran for two seasons between Seinfeld and Christine, and featured Steve Carell, but it doesn't seem to be on DVD.
Dreyfus has a good sitcom record, three hits under her belt, and of course a great occasional character in Arrested Development. I bet Michael Richards and Jason Alexander are secretly jealous!