Periodic table of visualization methods

Visual-Literacy.org has an nice Periodic Table of Visualization Methods from 2005 with mouseovers to see examples. There's a number of similar infographics, as well as links to different ways to access the periodic table, like to an XML page where you can see the graphic styles individually. (via @coleran)

Another fun infographic is Which Countries Own America’s Debt?

Update: Flowing Data discusses proporations in 9 Ways to Visualize Proportions – A Guide.