Fourier toy

So. Pretty.

Geometry as interactive design space

Bruce Cohen, Speaker to Managers, has a fascinating post up on interactive geometry that's worth a read or two.

NPZ visualizer

A Processing model of a neat biological system. Very cool.

Nice interactive graphic

Data journalism! Here's a neat interactive graphic for exploring gas prices over time in all 50 states.

Tangle: a JS library for reactive documents

OK, now this is cool: Tangle is a Javascript library for spinning reactive documents [e.g.]. The idea is to write text that can be explored - or, as further down the page on the second link, you can build some graphics as well!

Interactive diagrams

Another from the same Amit: an interactive diagram of a car's blind spots.