Well, I'm American and the stereotypes I hear most often from my friends from other countries are:
-Americans are fat. I don't fit that one because I am a few pounds over being underweight.
-American's don't travel. I sort of fit this one. I've never yet traveled internationally because I can't afford it, but I do travel a lot within the United States.
-Americans know very little about the rest of the world. I don't fit this one because I have friends in many countries and I try to learn as much about their culture as I can. Also, I can name every country in the world and point to it on a map.
-Americans are obsessed with celebrities. I definitely don't fit this one. I don't even think I could name three celebrities, much less be obsessed with them.
-Americans are racist. I don't believe I am racist. I am very open to other cultures.