Which American cultural artifacts are most known worldwide?

Historically speaking, blue jeans, rock and roll and Coca Cola are considered quintessentially American. These icons became especially significant among youth in eastern Europe during the fall of communism in the 1980s and 1990s. In more modern times, you could argue that the iPhone and tech giants like Google and Facebook are most recognizable. However, in all times, the President of the United States is perhaps the most famous person in the world.