Traditionally, universities focus primarily on instructionist teaching. Such an understanding has been criticized from theoretical and practical points of view. We believe that "socio-cultural theories of learning" and the concepts of "social capital" and "social creativity" hold considerable promise as a theoretical base for the repositioning of universities in the knowledge society. To illustrate our assumption, we provide case studies from the University of Colorado and the University of Siegen. These cases indicate how approaches to community-based learning can be integrated into a curriculum of applied computer science. We also discuss the role these didactical concepts can play within a practice-oriented strategy of regional innovation.