If you haven't read it, you might enjoy [link|http://www.amazon.com/exec/obidos/ASIN/0679772898/qid=1013179102/sr=8-1/ref=sr_8_3_1/103-9334142-8588622|Thinking in Pictures] by Temple Grandin. She's an autistic woman who is a professor and [link|http://www.grandin.com/|designer of cattle handling facilities]. She thinks visually.
It's a very interesting book.
Cheers,
Scott.