I went crazy and bought the Shaders Plus, Shader Ops, Shader Ops 2, Enhance:C and Anything Goos from DCG.

What fun!!

Just playing, but I've uploaded an image to my gallery doing a quick little replicate of this space station plus I couldn't resist, I used anything goos on a starship model from Daz to give the edges that worn paint look.

http://www.renderosity.com/mod/gallery/index.php?image_id=2315332&np

Yep, lots of fun has just been added to my shader tab!

(I too would love if you ever get the time to do some more tuts with an eye to plugins, Mark.  I learned a ton from your complete tutorial set for C7Pro from VTC, you're a good teacher.)