These are schematics rendered in Visio for both designers and engineers: This is an Adobe Illustrator document used in a client meeting describing a very high-level user flow and intent:

This is part of a Power Point presentation describing usability practices: This is a completely new way of creating dynamic schematics for a Flash site. The inspiration came to me in early 2002 and these schematics show "user experience design" better than most things (on paper) that I've seen. Ask me about it!

And finally a website where I designed the architecture and the visuals solo for the National Fisheries Center. The site map below is in Illustrator, the homepage to the right is in Photoshop: