Like some of the people above, saw it in New York years ago. Me and my Dad loved it, but got the impression many people didn't get it at all. We had an American friend with us, and a lot of it went over her head. We loved it though. Had the best seats in the house too, they weren't cheap!
Was going to see it in Glasgow a few months back, but the theatre is an expensive trip and I couldn't afford it in the end.