Canucks is okay by me. We generally use it to refer to ourselves...I'm not sure how I would react to an American using it (not having had the opportunity to try that!) Depends on if it's used in a derogatory sense, I guess. Or if the person is somehow making fun of the word. But there is an NHL team in Vancouver called the Canucks.

And CK, I'd heard the quote about IQ before. The thing Canadians often find funny is that lots of Americans don't know their funniest people are imports. Somehow it gives us a feeling of power, a bit of control over a country which unknowingly (or not) controls a lot of the cultural "product" that we receive...