This article was written/posted a year ago, but I found it interesting -- detailing some "trends" in web pages. Some of the ideas (like hand-drawn designs) are probably way beyond our reach. I hope at least one of these sparks something, lets you think outside the box for your next installation! :)
20 Things I Learned About Browsers and The Web is a fascinating book! You will learn about browsers, how people view sites, and so much more. The format is also an eye-opener. Great technique!