I was in Vegas for a conference and went to both Cirque du Soleil’s Ka, and Stomp Out Loud. My tour book said something like the following. In a city which is all about technology, Ka is the most technological of all the Vegas shows. The show has a multiple part stage. Each part can raise and lower, be moved forward and backward, and tilt. At one moment the performers are on a flat stage, the stage starts tilting and it is as if the performers are climbing a hill. The stage finally is vertical and the performers are twirling acrobatically on a face of a cliff. It’s mind blowing and Vegas all the way. The last time I went to Las Vegas I went to see Cirque du Soleil’s Mystere. Ka is darker and less overtly athletic. The other show I went to this time was Stomp Out Loud at Planet Hollywood. This one was decidedly low tech making use of brooms, newspaper, barrels among other things to make rhythms. Pretty cool.