It's all using photoshop mate, no other programs - I've posted a small step by step on the first page showing how i do the '3d' abstract pieces.
I don't use any premade things for my artwork except the odd splatterbrush for small touches on things.
Ahh, I just taught myself how to create similar effects, took about 25 mins to create a poor attempt at something, but its a start.
Pen tool, transform, perspective, gradient, action it. Can get some nice effects from this.