Canada and United States are two of the largest countries in the world. They are friendly neighbor states and share a large border. The worlds largest waterfall, Niagara Falls, is also on the border of the two countries.
While both countries are democracies, their style of government is different. French and English are the official languages in Canada while in the U.S., English is the official language. Many government services in the U.S. are also provided in Spanish because of its large Hispanic population.
American sitcoms usually poke fun at their neighbor (e.g. "Oh honey, Canadians don't matter" in That 70s Show) and often portray a stereotype of Canadians as polite people who are passionate about hockey.
Canadian television often portrays Americans as loud, opinionated people with a limited knowledge of things outside the U.S. Rick Mercer's Talking to Americans included Governor Mike Huckabee believing that Canada was building a dome over its "National Igloo" to protect it from global warming.
American film can also portray Americans this way. Canadian Bacon, an American film, had John Candy's character say "There is a time for thinking and a time for action and this, gentlemen, is no time to think," when debating whether to initiate an attack.