BMW Club of Canada (national website)

BMW Club of Quebec (Montreal based, our nearest neighbour club)

BMW Motorcycle Club of Ottawa

BMW Car Club of America

Motorsport Club of Ottawa (Tons of Ottawa-area motorsport events!)

Ben Liaw's Page-O-Links (probably the best page of BMW and automotive related links on the web)
Dale Beuning's BMW page (tons of really great info, archives, etc for E30, E36, other)