Well, when i do think of Americans, my thoughts vary depending on the context. Before you read on, you should know that i fully realize how bad stereotypes are. One unfortunate stereotype my brain has hatched is that they have an odd sense of humor. I mean sure, some of those sitcoms are amusing, but i wouldn't actually laugh loudly over them. I know that this is far from everything that American humor is based on, but it just so happens that they're the most frequent American comedies in the tellie here in Denmark.
Another generalization that has surfaced in my mind is that... Well, they all have a superiority complex in relation to other countries, and often have a lack of interest in them as well. No offence intended.
Now, there are many people just in this little community who prove both stereotypes wrong, but i can't really shake them. I admit to being a prejudiced individual, but i do my best to work around it. Apart from the above, i think the average American is pretty similar to the average Dane.