I’ve I come across a case in Ontario fussing with the difference between automobile and vehicle, and I have come across newpaper stories about people in Ontario who do not believe the government has the authority to tax them, including a group that bought an island in Superior who claim that it is not part of Canada because it was not on an early map (unfortunately, I can’t remember the name of the island). That nut that went after me for over a million spewed all sorts of nonsense about the courts not having jurisdiction over him, based in his mind on everything from the UCC to the ICJ (yes, I am still receiving cheques from him toward costs each month).
Up in my end of the province, there is a lot of legitimate discussion and dispute over the applicability of Canadian and provincial laws over aboriginal Indians, with some people (including a lawyer I used to work with) asserting that there is no jurisdiction at all. I have seen that line used in criminal court a few times by unrepresented people, to no effect. The flip side of the coin is that I regularly observe laws not being enforced on reserves that are enforced off-reserve, despite there being jurisdiction both on and off reserve (for example, the dearth of provincial regulation of landfills on reserve, or the failure to collect federal tax on gasoline sold on-reserve to non-natives).