The Web site for Alan Weisman's The World Without Us is an excellent example of clean design that engages the viewer in very compelling way. With one click, you can activate the display and witness the unfolding of a powerful story.
This is the kind of thing that cannot be done in books, and that even films cannot replicate. Web sites have an ability to engage their visitors in a way that no other medium has been able to accomplish, short of architecture.
Fine work, Alan.
For those who -- like me -- lack the ability to develop a powerful Flash-driven site, the "Getting Attention!" blog offers some good advice for integrating the more passive medium of video into your work:
How to Use Online Video to Strengthen Your Nonprofit Marketing Impact -- Carnival of Nonprofit Consultants| Nonprofit Marketing: Getting Attention Blog
And yes, I am definitely posting a link to this blog because it cites CDM's own usage of video. What can I say, I am a shameless promoter...