I saw the show last Friday and I echo what other posters have said so eloquently about the show. It's the equivalent of eating your favorite meal with your favorite people. It's sweet, charming, and comforting. Roundabout has hit a home run with.
I saw the staged reading Caramoor did a few years back and I've listened to the original and revival recordings, but seeing a fully staged performance just made it. The show succeeds in all areas, really. It's not trying to be something it isn't--it works because it hasn't been changed to being set on a Martian colony just for the sake of trying to be different. It's genuine. I can't really think of what else to say other then it's such a satisfying show.
The cast is tight and precise. I found the 4 leads to be outstanding. I easily see 2 or 3 acting nods from the cast. Laura Benanti was amazing and I loved every second of seeing Jane Krakowski (Sadly, when I saw Nine, she was out). Zachary Levi was great and I really think if he up and decided to never do TV or film again, he could make it in theater. And Gavin Creel does no wrong in my book. Ever. Dude could sit there and eat a ham sandwich and I'd cheer.
If I only had one word to describe the show, it would be charming. It's lovely show being executed at it's best. I've seen all the revivals this season, save the TBA Shuffe Along which I'll see right before Tony noms, and this, in my eyes, is the new front runner for revival. I really enjoyed the SA revival and thought The Color Purple was done the way it was always meant to be, but this is just such a great example of how to revive a show well. It's a must see.