The IEEE Tutorialand ResearchWorkshopon Perceptionand InteractiveTe- nologies for Multimodal Dialogue Systems (PIT 2008) is the continuation of a successful series of workshops that started with an ISCA Tutorial and Research WorkshoponMultimodalDialogueSystemsin1999.Thisworkshopwasfollowed by a second one focusing on mobile dialogue systems (IDS 2002), a third one exploring the role of a?ect in dialogue (ADS 2004), and a fourth one focusing on perceptive...