Hello World! Processing (via @johnmaeda) is a documentary on creative coding that explores the role that ideas such as process, experimentation and algorithm play in this creative field featuring artists, designers and code enthusiasts. Based on a series of interviews to some of the leading figures of the Processing open programming platform community, the documentary is built itself as a continuous stream of archived references, projects and concepts shared by this community. It is the first chapter of a documentary series on three programming languages -Processing, Open Frameworks y Pure data- that have increased the role of coding in the practice of artists, designers and creators around the world. The series explores the creative possibilities expanded by these open source tools and the importance of their growing online communities.