Took Carlo Arellano's Advanced Entertainment Design course at he Concept Design Academy last winter/spring. It was a great class and I would recommend it to anyone, regardless of experience level (although it IS an "advanced" course, so I guess not ANYONE exactly...). It did a lot to get me back into actually drawing stuff out a little more and focusing on design rather than a fancy painting. Anyway, here's some of my homework. We had a fun time redesigning stuff from "Avatar," which always seemed like a mixed bag to me in terms of design...i.e. those blue cat people are a little to close to being furries for my taste!
Carlo Arellano's Blog
Concept Design Academy