Natural language processing (NLP) technology is becoming widely recognized as a key component of conversational systems. More and more speech and multimodal applications are using NLP and NLP resources are becoming increasingly available through web services. Online natural language processing services can supply natural language capabilities to a range of mashups for both speech and text-based applications. This session introduces participants to the possibilities for using natural language processing in their own applications. Following a brief overview, most of the session focuses on interacting with online NLP APIs that perform tasks such as classification, part-of-speech tagging, parsing, and named entity recognition. Attendees can try their hand at supplying their own training data for a simple statistical NLP classifier. For details, see http://www.conversational-technologies.com/ SpeechTEKUniversity.html.