Wow, this is a great thread. Thanks PTravel!
I have seen BMG 2x. Once in NY about 10 years ago, then at the Luxor about 4 years ago. While I enjoyed the production in both places, the viewpoints of my companions could not have been more different. One liked the show, the other was checking her watch after 15 minutes and absolutely could not wait for it to end.
In speaking with friends that have seen the show (either in NY or LV) the reaction is solidly in the "I liked the show, or the I hated the show" camp. There seems to be no middle ground.
I'm happy that you enjoyed Ka, I will be seeing it this weekend in LV.