The Disciplines of User Experience Design is a mega Venn diagram by Dan Saffer (given a pretty makeover by Thomas Gläser) that explores all of the overlap between UX and other fields of design.  While other client experience elements like service design, psychology, cognitive science, and marketing are missing – you gain an appreciation for the many elements that are incorporated into the user experience process.

via Infographic: The Intricate Anatomy Of UX Design | Co.Design.