i guess poutine is the food most often cited as canadian fare, at least in my experience. i've been to canada many, many times, and i've never tried it, so i can't say whether it is any good or not. what i do know to be good is receiving cards in the mail, as i did a short while back from brian at 'highly subjective and completely arbitrary'.
one of the cards that was on display in one of the team bags was this pedro guerrero oddball
it turns out that it is from a 1987 general mills fold-out food issue, which was obviously distributed in canada, because it's got the requisite french translations on it.