To date, there are three teams participating in the Ubuntu Global Jam across the country:
Vancouver will be updating their Unity documentation to 11.10, and will offer an area to socialize over jam.
KW will be starting a project to build a GUI tool to help with packaging. Help with the usual 11.10 installation and upgrade testing will also be available. And we'll order out for pizza, of course.
Montreal's event will be hosted at the Canonical offices in that city. If you find problems with your hardware, you'll be able to talk directly to some of Canonical's Ubuntu developers and support professionals who can help sort it out and get the fixes in.