Argentinian artist Pablo Vazquez, also known in the Blender community as VenomGFX, has published a making of his famous artwork called "Swim, Merlin, Swim".

I found it cool the way he managed to achieve the water caustics effect: he used a "caustics generator" (open source) to create texture maps which were mapped into a spot light later on.

Oh... and Pablo is the new member of Project Apricot, of Blender Foundation. This project will deliver an open source game, in the same way the animation projects.

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And I also stumbled upon an article called "How to break into Animation". Worth a read. =)