Here are my some of my favorite images. I've only been messing around with PDN for about a week. I hope you like them as much as I do! Thanks for the open and friendly community!
I know I'm obsessed with the sphere, but honestly I used to draw these out longhand when I was bored in math class. Click http://viewmorepics.myspace.com/index.cfm?fuseaction=user.viewPicture&friendID=68449342&albumId=905909 for proof. PDN and the AMAZING Shape3D plugin have made it so much easier for me to express what's going on in my mind.