Here at PL we often concentrate too much on hardware.
Lets talk about choreography and manipulating the audience a bit.
Here is a good example of good choreography, but not in laser. These are 40 years old, so they have a really good crew keeping them working. Note spellbound audience.
This is known as a "mirror" sequence/ Note the clever use of the 'Z" axis.
http://www.youtube.com/watch?v=sUsiHAYJByM
But they are not insane.
This is insane, note the rotation about the X axis.
see 2:39 in this one.
http://www.youtube.com/watch?v=8alR9...eature=related