Leave it to boingboing to bring us a post on Rick Mercer's CBC special, "Talking to Americans." Rick is one of Canada's great satirists, and his show is the highest rated comedy special in Canadian television history, reaching 2.7 million viewers in Canada... that's close to10% of the population of Canada (now at about 32.6M). There's even an entire section of the Wikipedia dedicated to the show.
The post on Boingboing includes links to examples of the humour. You will not be disappointed.