Humlab's seminar series started in 2002. The earliest of the recorded sessions is Constance A. Steinkuehler from University of Wisconsin-Madison that talked about MMO:s in teaching.

040525 Steinkuehler: ” Massively Multiplayer Online Games as Learning Environments”
 Massively Multiplayer Online Games as Learning Environments Constance A. Steinkuehler, University of Wisconsin-Madison