Listed here are some books and online resources for those who are interested in interactive computing and interactive characters.
Embodied Conversational Agents
Justine Cassel, et al. (editors)
MIT Press, 2000
The Art of Interactive Design
Chris Crawford
No Starch Press, 2002
Computers as Theatre
Brenda Laurel
Addison-Wesley, 1993
Tell Me a Story: A New Look at Real and Artificial Memory
Roger Schank
Atheneum, 1991
Richard Wallace, Director
Byron Reeves
Center for the Study of Language and Information
Stanford University, 2002