Prof. Dr. Dr. h.c. mult. Wolfgang Wahlster is the Director and CEO of the German Research Center for Artificial Intelligence (DFKI GmbH) and a Professor of Computer Science at the Universitat des Saarlandes, Saarbrucken. In 2000, he was coopted as a Professor of Computational Linguistics at the same university. In addition, he is the Head of the Intelligent User Interfaces Lab at DFKI. He was the Scientific Director of the VERBMOBIL consortium on spontaneous speech translation (1993-2000) as well as the SmartKom consortium on multimodal dialog systems (1999-2003) and currently serves as the Scientific Director of the SmartWeb consortium on mobile multimodal access to semantic web services (2004-2008). He has published more than 150 technical papers and 6 books on language technology and intelligent user interfaces. His current research includes multimodal and perceptive user interfaces, user modeling, embodied conversational agents, smart navigation systems, semantic web services, and resource-adaptive cognitive technologies. He is the editor of the book "Verbmobil: Foundations of Speech-to-Speech Translation" (Springer) and the Co-Editor of the Readings in Intelligent User Interfaces.