I was expecting more of a situational comedy, but USOT is quite a bit more than that. Certainly there are amusing dialogues, but the real draw here is the suspense of not knowing what to expect next. Toni Collette pulls it off beautifully. Method acting pays off in spades. The rest of the cast perfectly balances her over-the-top personae. You don't feel sorry for this woman's family, you feel that they feed of the drama that each new character brings into their lives. In a sense this is like MTV's Real World with one person playing the majority of the cast.
I'm not sure how long the series can maintain interest, but it has my vote for the most intriguing series of the new year.