Oh yes take him!
Cirque is memorizing and I'm sure that he'll enjoy every minute of it. I've seen La Nouba and I loved it. If I remember correctly Cirque designed this show with kids in mind (some of their Las Vegas shows you have to be 18 or older). If you don't already know La Nouba is a place where dreams and nightmare collide. I've also seen Varekai in Chicago and love it as well. I watched the special on A & E about creating it, so I just had to watch it.
If you get A & E, check and see if they are playing any Cirque shows. They won't show La Nouba, but they will show some of their shows (the ones that travel).