Everyone HIGHLY recommended the Tang Dynasty Music and Dance. It was a huge hall crammed with other tourists eating food and drinks with a large stage in the front. The show was a combination of various dance, arcobatic and musicans playing. Granted they are all extremely talented but we found the show 'too touristy'...if that is a correct expression.
The show had a certain Las Vegas show feel to it.
We are glad we came to see it but in the end it was one of the more average things we did in Xian.