Do you speak American?

http://www.pbs.org/speak/seatosea/americanvarieties/map/map.html

The website was made by the PBS (Public Broadcasting Service) together with a documentary, and it aims at a broad audience. It provides a list of 14 American dialects, many of which are categorized by region of occurrence (Californian, Midwest, New York City, Pacific Northwest, Pittsburghese, Smoky Mountains, Texan); others by their ethnical influences (African American English, Cajun, Chicano English, Lumbee); and by their linguistic features (Spanglish, A-prefixing, R-ful Sourthern*) * also categorized by region. Descriptions of all 14 dialects contain their most distinctive linguistic features as well as their historical origins. One of the site's highlights is the link "Radio America" that provides recorded samples of speakers from 50 American states.
In addition the website features articles on language prejudice and prestige, the notion of Standard American English and debates for and against declaring English the official language in the US.
There are also very interesting quizzes containing speech samples and regional expressions. By trying them out, you can test your ability to recognize the dialects of various regions in the US and also find out, for example, what Pennsylvanians mean when they say they have “Lucy Bowles”!