These images are from the DVD extras on the Monster, Inc. disc. I wanted to show the level of artistry the storyboarders use when they do a presentation of the script for a group as part of the PIXAR process of story development.
The dialogue (when there is dialogue) is on the card under the image. In the first image, you'll see a lot of cards without dialogue.
What I thought was interesting, as well, was that in this pitch portion of development, they aren't very concerned with how high the quality of the images is. That is, it's easily something most of us could doodle with a bit of practice.
Terry Rossio talks about pitching using storyboards, so I don't see why any screenwriter shouldn't get a book on basic cartooning, and learn to storyboard their own work, whatever genre the screenplay is.