As evidenced by the name, Inter-Disciplinary.Net, a fundamental belief in the value of inter-, cross- and multi-disciplinary thinking is central to the core ethos of our network. But what does it really mean to think or work in an interdisciplinary, cross-disciplinary or multi-disciplinary way? What distinguishes these three terms from one another? What are the key strengths of each approach and how might they enrich research and teaching? What are the existing models of best practice and how might those serve as a basis for further innovation? These and other questions will be explored in greater depth through the activities of the Interdisciplinarity Project.