I had seen this show maybe 10 years ago and thought it was great. I got to go again recently and I had just as much fun. There were alot of the same skits but it still made me bust a gut and spew my digested twinkies all over the place. Good thing they pass out those plastic ponchos before hand.
If you have never seen Blue Man I would definitely recommend it, especially if they have tickets on sale. The music is great, I would go and just close my eyes and listen, but don't get caught or you may get pulled up on stage.