If you ever find yourself in Hanoi, go see Nhà hát Múa rối Thăng Long. Really interesting, with so much history and a real taste of the performance culture of an incredible people.

There are 3 links below, all useful, but the blog Vietnam, Water and Puppets is an excellent source of information.

http://www.thanglongwaterpuppet.org/?/en/Home/

http://vietnamwaterpuppet.wordpress.com/

http://www.thingsasian.com/stories-photos/1239

And a few videos to put you in the picture