Coca Cola is very famous in America! Pepsi as well, but I like Coke better!
Something big on tv in america is "reality television". There's so much of it on tv and most of it is different shows of the same idea! Like "American Idol", "Star Search", "PopStars" and "Fame", are all shows where you basically try to become a Music Star. Those who actually make it only get about 14 minutes of fame, unless you're on "American Idol". That show would have to be the most popular.