I just learned how to make homemade Mac and Cheese from Alton Brown
Wow,  e for Chosen Topic  Macaroni and cheese  Macaroni and cheese—also called mac and cheese in American, Canadian, and macaroni pie in Caribbean English; and macaroni cheese in the United Kingdom—is a dish of English origin, consisting of cooked macaroni pasta and a cheese sauce, 
The real trick is to make a homemade bechamel sauce to melt your cheese in. I prefer cheddar cheese, you?
I prefer macaroni , Traditional macaroni and cheese is a casserole baked in the oven; 
Well, if we are getting traditional, Thomas Jeffereson is responsible for the popularity of Macaroni and Cheese in the United States.
Oh yes,  right in the United States,  it is considered a comfort food.