"Chartophiles, have you heard that Google has made it incredibly easy to generate your own slick-looking charts? It’s true, and all it takes to make one is the ability to read and edit a URL. This has made it possible for lots of people to get creative with charts. Read on to see what’s been done, and how you can do it yourself."
Plus, here's some nice advice on chart resources from Jorge Camoes:
"No book had more influence in the way we think about information visualization than Edward Tufte’s The Visual Display of Quantitative Information (Tufte’s books are a pleasure for the eyes so you can leave them in the living room…). Tufte combines a minimalistic approach with easily digestible concepts (like chartjunk, data-ink ratio, data density) to create a strong framework. Use that framework to validate your design. Discover other authors like Stephen Few, Jacques Bertin, William Cleveland, John Tukey, Stephen Kosslyn or Colin Ware.
Edward Tufte maintains a discussion forum. In Stephen Few’s site you’ll also find a discussion forum and some before/after examples of chart design. It is difficult to find great examples of information visualization in the media, but the NYT is a good reference. A list of online resources can be found here."