OMG! Just found the most WONDERFUL book for my proposed "Developing 21st Century Literacies: Integrating Visual and Verbal" class.  CHECK IT OUT!!!  I'm putting it on the required texts list right now!! http://www.mollybang.com/Pages/picture.html

Here is even a teaching PowerPoint to go with it!  I haven't looked at the entire PowerPoint, but the first few slides are from the book. BEST DAY EVER!!!
http://www.nhsdesigns.com/pdfs/graphic_ss_picture-this.pdf