Well, Chicago (one of my favorite shows) has almost NO set...they drag a couple chairs around. Spelling Bee is absolutely adorable, but it's set in a school gym.
I'm a fan of Curtains, I thought the set was pretty nice. I haven't seen Mary Poppins yet but (as someone said above) I hear the set is ridiculously beautiful.
"Now she wants to know WHY, if I'm so fabulous, I would WANT to take care of her child.....I answer with as much filigree and insouciance as I can muster, trying to slightly cock my head like Snow White listening to the animals. She, in turn, is aiming for more of a Diane-Sawyer-pose, looking for answers which will confirm that I am not there to steal her husband, jewelry, friends, or child. In that order."
The Nanny Diaries