I am having hobby-fun with learning Processing (http://www.processing.org/)
I like how I can do millions of vector based calculations pr second. But I want more. I want much, much more. Millions of times more. I am having fun rendering particle systems / simulations. My poor computer is rendering day and night, but it's noway near enough.
I am running programs that save screendums as PNG, and then a second program (Processing tool) to gather them into movie files.