I started reading Edward Tufte's 'Beautiful Evidence' (BE) over the weekend. This is the 4th book in a series (he says a quintet is to be expected) dedicated to the craft of information design.

Tufte's books have withstood the test of time with a high level of integrity. His work quite simply reveals "The Truth" of information design as he identifies great works from centuries past (and modern era) that have fought to change mankinds beliefs through the power of the pen and paper on thinking such as "the world is flat" and "the earth is the center of the galaxy".

I personally borrow heavily from Tufte's "let no pixel go to waste" philosophy. There's is most definitely an art to depicting thousands of data points within a single image.

My only complaints with this book are:
a) material from previous books is recycled, such as Joseph Minyard's March of 1812 (to Tufte's credit, he does spend considerably more time on this piece than in previous books)
and
b) the chapter dedicated to PowerPoint bashing takes away from the overall integrity of his work. It would have sufficed to say that PowerPoint templates and charts are the cause for much misinformation, and many people would tend to agree. But just about everyone uses PowerPoint occasionally, so this chapter does little more than to alienate everyone to a degree and denies PowerPoint it's key utility of being a framework for discussion rather than an actual informational artifact.

Those who work with massive datasets in Salesforce.com understand the "If we only knew what know" feeling. But it is the work of Tufte that helps us focus on mining these databases and unearthing hidden information through heat maps, graphs, and other types of multi-variate charts.

A few years ago, when this book was in pre-publication, I wrote a simple sparkline program based on Tufte's latest research, but alas it was abandoned as a solution looking for a problem. I'm inspired to start using VisualForce to implement some of these concepts again.

I recommend catching Edward on one of his many book tours. All of his books are typically included in the registration fee and he explains the concepts in a very entertaining manner. This is a must attend event for anyone in Graphic Design or BI Visualization.