More and more live theatrical presentations are driven by software. Of course Kraftwerk are the godfathers of technology in the arts.
Kraftwerk began touring again in 2004. They captured the performance and are offering an right now audio cd and in the near future will be releasing a double DVD. This site has some clips that will be on the DVD - http://kraftwerk.technopop.com.br/video.php
After watching this footage, I think it's fascinating how these pioneers in synth music continue embrace technology and have radically simplified their stage setup to deliver their music live. Each member has a laptop (sony vaio) and small midi keyboard controller - that's it!