Nothing worth watching on television? Eyjafjallajökull not doing much these days on the rare occasions when it’s not hidden by clouds? Take a look through the Sakura-jima webcam. When the weather is clear, you probably won’t need to wait long to see a nice column of ash burst out of the crater. Sakura-jima has been almost continuously active since 1955.
You can control the camera, by the way. Click on the box with crosshairs at the bottom right of the viewer and wait for the countdown to end. The bar to the right of the picture controls the zoom, and the little box under the picture controls where the camera points.
A different sort of video: Arthur C. Clarke, Benoit Mandelbrot and the Mandelbrot set, with a soundtrack by David Gilmour. (Via Steven Riddle.)