This year's TeraGrid Conference was taking place in Arlington, VA, from June 22 - 25 and coincided with ISC09. Keynotes came from the National Science Foundation (Ed Seidel), the Open Science Grid (Paul Avery), and the University of Utah (Thomas Cheatham). Most presentations were organized in tracks for technology, science and education/outreach/training. A "Global Grid Perspectives" panel was scheduled for June 23.

From the TeraGrid Blog:"Tuesday: Wild World of Grids: Tuesday morning's panel on "Global Grid Perspectives" gave a taste of the future while, at the same time, acknowledging some of the obstacles, such as the importance of standardization and the difficulties of funding. Geographically, the panel circled the globe. It comprised leaders of grids in the European Union, Japan and the United Kingdom --- Hermann Lederer of DEISA (Distributed European Infrastructure for Supercomputing Applications), Kenichi Miura of Naregi (Japan's National Research Grid Initiative Project), and Peter Coveney of the UK's eScience. John Towns of the TeraGrid moderated."

Further reading:
http://www.teragrid.org/tg09/blog/?p=123
http://www.hpcwire.com/blogs/Wild-World-of-Global-Grids-49005416.html