My wife was looking through a collection of work I hadn't laid eyes on in... gosh... FOREVER and looking at it, it sort of reminded me a bit of something I had alot of fun working with.
These aren't collaborated in any way accumulative, at least for the first two:
I was still in college at the time taking a summer class at the University of Arizona, that summer class being a Comic Arts and Illustration class.
I took the class twice over the course of two years, once for each year before I graduated and was pretty proud of the results at the time... still do in fact, actually.