I would most certainly advise going to see it, it is the best Play I've ever seen.
( Though Admittedly I haven't seen that many
Jen - I agree with you that they didn't quite capture Elphaba's character, but Elphaba was very complex and it would have been weird to put her in a family musical. Fiyero was totally different in the musical, I liked him but it did suprise me how they only really kept his name and that he was Elphaba's lover - everything else about him changed. He was very much .. americanised, if you get that?
I saw something earlier about a third one...