Pervasive computing’s historical driver applications include environmental monitoring, safety and security, home and office productivity and guided experience of cultural activities. It also suggests and offers the means to achieve new types of expression in art and entertainment, which has not been a significant area of research despite its cultural and socio-economic importance and unique requirements. This paper discusses motivations and requirements for a pervasive computing architecture for expression, and it presents a specific approach being developed at UCLA in collaboration among research groups in engineering, theater, film and television.