Those wacky Canadians know all a-boot funny music, eh

I picked up the Darkest of the Hillside Thickets CD a few weeks back on the basis of their "Math Song" and I noticed that all the bands I enjoy that do the whole "we're a band with a sense of humor" thing well seem to be Canadian. American joke-y rock is often crude and far from subtle, but it just seems like every whimsical, unpretentious band I hear comes from the great white north (Moxy Fruvous, BNL).