Culture Grams (Click on World Edition)
A dish from each country
Wikipedia (Look for separate entry for your country.) Yes, this is one of those times when Wikipedia is a decent resource. Remember that Wikipedia is good for some assignments, and not for others!
About.com has some good stuff, if you look up individual countries.
IF you have your public library card, you can type in the number to access this $$$$$ database:
Latino Experience datatbase