More on the Transition Town movement

A general description, from Peterborough, ON which was Canada's first TT:

The Transition Town movement is focused on reducing our community-wide dependency on fossil fuels while increasing local resilience and self-sufficiency in food, water, energy and all other aspects of life, while encouraging community building and wellness. Transition towns are made possible by regular people in the community taking action towards positive change, and is shaped and guided by all who are able to participate, in whatever capacity they can.

We seek to create as well as to connect, building a new model of grass roots transformation while helping to bring existing groups and individuals together to work towards a common goal of local resiliance in the face of a fragile food and energy system that we recognize as being threatened by economic, political and natural forces.

Another introductory description can be found at Guelph's Transition site.