Indeed...
The rest of Canada has a bit more general jokes:
BC has a bunch of toke smoking hippies
Alberta is conservative, and is sometimes viewed as the Texas of Canada, with its oil and all
Saskatchewan and Manitoba doesn't have much of anything there, and the majority of the people are hicks.
Ontario is blindedly liberal and generally uneducated (not to mention over-populated)
Quebec everyone makes fun of them, about anything really
Martitimes: pretty much already mentioned, except fishing is also included
And no one has jokes really for up north... though if one is the alcoholic type, the north would probably be enticing.
Yeah... so that's Canada in a quick few sentences. XD
It sounds much worse than it actually is though (I mean its not really that bad, people just enjoy poking fun at each other).