2006
Interdisciplinary Scholar-in-Residence, CET, UC Berkeley

2004
Fellow, International Computer Science Institute, Berkeley

2003 - 2005
Visiting Scientist, Silicon Graphics

2002 - 2004
Jones Center Fellow, Wharton School, UPenn

2002
Visiting Faculty, Dartmouth College (Surgical Simulation And Tele-Medicine)

1999 - 2002
Chief Scientist, Eyematic Interfaces (IP and most of team now at Google)

1997 - 2001
Chief Scientist, Advanced Network And Services (Parent organization at the time of the Engineering Office Of Internet2)

1997 - 2000
Lead Scientist, National Tele-Immersion Initiative (1st Tele-I Implementation)

1997 - 2001
Visiting Scholar, Columbia University

1996 - 2001
Visiting Artist, Interactive Telecommunications Program, NYU

1984 - 1990
CEO, VPL Research (1st Multiperson VR And First Commercial VR Products)

1983 - 1984
Researcher, Atari Labs

1980 - 1983
Independent Video Game Developer