I'm sure that most of us here are familiar with this, but I haven't seen a lot of posts about her work, so I figured this must be new to a decent amount of people.
She has made quite a few 3D comics, and a couple of them are very process heavy, and IMO are the best process comics I have ever seen.
"The Heir Part 1" and "The Good Son" have awesome process sequences.
http://icolan01.tripod.com/hollydunnpresents.html