Many other groups at NCSU, inside the US and internationally, work in the area of interactive narrative, games + AI and games research overall.  Below is a growing list of colleagues and their groups working in related areas. My apologies if you're not here yet.  I'm running behind in my updates!

Interactive Narrative

• The Adaptive Digital Media Lab at Georgia Tech
  
• The Expressive Intelligence Studio at UC Santa Cruz
• The Intelligent Narrative Computing Lab at Georgia Tech
• The Intelligent Virtual Environments Group at the University of Teesside
• The Intellimedia Center for Intelligent Systems at NC State University
• The Narrative and Storytelling project at the Institute for Creative Technologies at USC
• Nicolas Szilas at the Université de Genève
• The Vision, Interactive Systems and Virtual Environments Group at Heriot-Watt University
• The emiie Lab at Simon Fraser

AI in Computer Games and Virtual Worlds

• Charles Isbell (Georgia Tech)
• Ian Horswill (Northwestern)
• John Laird (University of Michigan)
• Michael Youngblood (UNC Charlotte)
  

Computer Science-centric Games Research

• Tiffany Barnes (UNC Charlotte)
• Bruce Gooch (Victoria)
• Steve Feiner (Columbia)
• Ken Perlin (NYU)
• Yusuf Pisan (ITU Sydney)
• Ashwin Ram (Georgia Tech)
• Ben Watson (NCSU)
• Michael Zyda (USC)