One of the challenges the service providers currently face is the ability to introduce a variety of services at a minimal cost and impact to their customers. These services often become personalized as more and more content becomes available. The natural progression to the service/content explosion is a seamless user interface that remains consistent across the various services and devices. The Essistant architecture attempts to provide personalized services to the end users through a seamless multi-modal user interface and a systematization of the backend services. This paper describes the overall architecture of the Essistant project. The associated video demonstrates the functionality of Essistant for a set of services that have been implemented in a lab environment. The services include video-on-demand using an automated price broker, broadcast video over IP multicast, personalized news, and horoscope, and interaction with the physical space by acting as a proxy to a robot. Catego...