Blue Man Group is an outstanding show! Some great humor, amazing music, quirky instruments, and the visuals are stunning at times. The show is definitely more than worth the price. I've now seen the Chicago and Orlando show, and would go back in a heart beat any day. There were some differences between the two, and the biggest one that kind of disappointed me was that they didn't pound a grand piano like they did in Chicago. That might be because of the stage size/setup in the Aquos theater, I couldn't really get a good size comparison.
I was also chosen to be a part of the act right before the finale, which was a really, really cool experience. Definitely go see them, you won't regret the decision.