USC has an interdisciplinary project on Game Theory and Human Behavior, which includes AGT researchers David Kempe, Shang-Hua Teng, and the just-hired Shaddin Dughmi, as well as the Teamcore research group headed by Milind Tambe that works on “applying research in multiagent systems (MAS) to [...] security, safety and sustainability.” The Teamcore group is offering postdoc positions.
They’re definitely an extremely strong group of people. Don’t forget about Hamid Nazerzadeh who is about to join the business school there. Also, I consider a lot of the work done in Milind Tambe’s group these days to be AGT (algorithms for computing mixed strategies for (security) games — what could be more AGT? — I talked about this line of work at the iAGT workshop).