Freaking amazing!
Way over priced... but its something that you only do once. Unless you are crazy wealthy. The tickets we had were about $200 a piece (because the cheaper ones were sold out) , and if you don't mind sitting in the nose bleeds you can tickets for $100. If you can afford it... I would defiantly recommend it.
This is the 2nd Cirque Du Soleil show I've seen... the first being Mystère at Treasure Island. This one was even more amazing, and if you only get to see one show... make it this one! Don't be cheep... see this show. It is worth it!
My only complaint... that I forgot to take a camera.