The cool PageCurl effect ported to GLSL Hacker
A pixelated Qoob mesh
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Yeah, Gamedev offers us a cool article about 2D metaballs: what they are, and how to implement them. Metaballs are these squishy circular objects that have an organic look and feel that were widely used in demoscene.
Read this nice tutorial here: http://www.gamedev.net/reference/programming/features/isometa2d/