Ahhh...Shaun...I envy you.
www.mkzdk.org having been one of my favourite websites since I first had a puter a few years back, I quickly discovered the link to the apps used. And ArtMatic fascinated me from the start. Unfortunately, it was only for mac...
I contacted Eric Wenger, but he answered it would not be recoded for PC. Which led me to
www.fractalus.com, and from there to Ultrafractal.
To answer the question, my main programs apart from Photoshop7 are:
-Ultrafractal with Apophysis (Win only)
-TextureMaker (the former Infinite Textures, Win only)
-Cinema4D 8.5 with Bodypaint
-Poser5 (which I hope to replace one day by a better app)
One of the main advantages of 3D is that you can create a form (mesh) separately from its texture, that you can make an infinite variation of light playing on the surface, and that you can move, turn around and twist your object to look at it from all possible angles.
apart from that, I also use some plug ins for Photoshop, although not very often, and I also have a font manager installed (Extensis Suitcase), Irfanview, which replaces with flying colours the Photoshop Browser, Dreamweaver and Fireworks, and XaraX as vector app. And the free Abiword to type an occasional letter.