2007 Free and Open Source Software for Geospatial Conference (FOSS4G). FOSS4G 2007 will be held in Victoria Canada - September 24 to 27, 2007. FOSS4G is an annual event providing workshops in Opensource GIS and showcasing use of Opensource GIS software.
Check out the RSS feed of presentation proposals to Foss4G 2007
Now the listings are available in KML format
For a quick glimpse at presenters: Google Map of Foss4G Presenters. The KML gets cut off a bit though, but still a lot to see.