Mr. Java is the Media Lab's wired coffee machine, which keeps track of usage patterns and user preferences. The focus of this project is to give Mr. Java a tangible customer-feedback system that collects data on user complaints or compliments. "Thumbs-up" and "thumbs-down" pressure sensors were built and their signals integrated with the state of the machine to gather data from customers regarding their ongoing experiences with the machine. Potentially, the data gathered can be used to learn how to improve the system. The system also portrays an affective, social interface to the user: helpful, polite, and attempting to be responsive to any problems reported.