I haven't seen that many musicals yet, but I just saw this in London and I highly recommend it. The idea is pretty simple: It's the story centered on the wicked witch in the Wizard of Oz. It starts with her birth, and then you follow her to school and then through the Wizard of Oz storyline. It has a great creative story and a great ending. I don't want to give anything more away, but it's totally worth watching if you happen to be somewhere that has that show running. Due to the strength of its story, Wickedis the best musical I've seen thus far.