The 2006 Access Grid Retreat was held last week in Ann Arbor, Michigan, USA, hosted by Internet2 at the Michigan Information Technology Center. There were a number of presentations of interest to the general community, and the slides from the presentations are available online:
http://www.mcs.anl.gov/fl/flevents/ag/agr06/slides/Proceedings.htm If you have questions for any of the presenters, I'm sure they would be willing to answer them via email (you should find email addresses in the slides).