See the very cool MOCS system, which lets you generate Maps of Computer Science, with heatmap profiles of various conferences (e.g., STOC), journals over time (e.g., JACM first decade vs last decade), as well as researchers and groups.
Also recent is our "new and improved" AngryAnts system which lets citizen scientist help biologists by tracking ants in ant-colony videos.
I am one of the Program Committee chairs for the IEEE PacificVis conference in 2012.