This was a great interview. I didn't know he worked on TOY STORY, but I've always wondered in ALIENS IV would have turned out better with his script. Probably not.
I recently watched "Objects in Space," the last Firefly episode, with commentary by Whedon. For an insight into how his mind works, there is nothing better than this, as he alks more about philosophy (existentialism) than the show. Turns out he hates guns, but since Firefly is an action show, guns are necessary.