Around 2003, I enrolled in some "adult-ed" (aka. intentionally non-credit) courses at UC-DAAP – including Intro to Digital Video, ironically, where these illustrations were done. I had just nixed my long-term Architecture goals, and so was just sitting in on various classes of personal interest.
This particular course – Intro to Digital Video (now known as Motion Design) – was an emphasis just starting to make the rounds in educational spheres at the time. I had no idea what to really expect, but it looked interesting.
Fortunately, this class – and my relative success in it – became a jumping off point for my future in Motion Design and Animation. This meant relocation to Savannah in pursuit of an MFA from SCAD (one of the first schools in the country to offer a Motion Design degree).
Anyway, the syllabus here was far-reaching – from basic infographic and animation history, to technical skills in Illustration and Animation, and even touch points on Interaction Design (dekstop-centric, at the time).
The professor, Artie Kuhn, really threw a lot of content at the students, even though most were pretty green, but he hit a lot on the head for me: An Edward Tufte / infographic design primer, Disney's 12 Principles of Animation, intro to After Effects, digital illustration with live models, et al.
Specifically, though, this was my first attempt at freehand digital illustration, and using Corel Painter. (I'd experimented with vector illustration in the early-90s Adobe products, but nothing to this extent.) Several different models were brought in over the length of the course for some quick sketch sessions, and we attempted to render them via mouse.