Since there was a decent demand for a tutorial on how to achieve the tron / android look:
I did a 6 page tutorial for the German Advanced Photoshop magazine (now bildbearbeiter) http://www.der-bildbearbeiter.de/2012/03/der-bildbearbeiter-042012-ist-da/ Interesting for German readers only.
The complete workshop covers how to create the tubes with the pen tool and how to achieve cyborg-skin-look.
I have put a little overview / walkthrough on my blog here: http://fantasiox.blogspot.de/2012/04/android-legacy-look-walkthrough.html
All image credits are mentioned and used with permission, the model is courtesy of http://mjranum-stock.deviantart.com/
Hope you like and I hope it is a helpful article.