When you write a computer program you are basically encoding an idea into a specific notation that a computer can run. (Casey Reas)
Hello World! Processing (2013, ~41min) is an interesting documentary about creative coding, with focus on open source tools.
I contributed with a portuguese translation of the subtitles, with help from Artur Cabral Reis (Processing SP) and Marcelo Padovani Macieira.all.