You can make bar, pie, line, and Venn diagrams at Chartle. Not to mention scatter plots, radar charts, org charts, and tables. You can create a number of maps based on world and US maps, including ones which rely on Google to generate interactive maps that use population, locations, lat/long, and more.
Perhaps the coolest charts at Chartle are the interactive annotated timeline and motion charts. Not unlike the charts available in Google Docs, your viewers can actually manipulate these charts after you publish them.
Speaking of publishing, when you're done with a chart or graph you can click the Publish button, which gives you an embed code you can insert in any Web page. The service is free, it's easy to use, and it lets you create some unusual-looking charts and graphs for your next online publication. [via Cybernetnews]