Well, if we're talking stereotypes there are a few depending on various things. There is a youth culture thing where USA is the holy land of all popular culture. Teens and Preteens especially embrace American music, TV and even fast food culture. On the other hand, among adults the stereotypes are sadly a bit more negative. "Stupid" is usually the first word when people talk about you good folk, along with "noisy" and "warmongering". Gun issues don't really get that much attention here aside from major incidents, since we have a quite rich hunting tradition and many people in rural parts have guns as heirlooms from the wars. On a more personal scale, the word that gets thrown around my small circle of friends is "melodramatic". In Finland public displays of emotion are usually frowned upon and considered something only drunks do, so your Jerry Springers and TV evangelists are really strange for us culturally speaking. Likewise, personally I don't really get the hysteria exhibited by people in shows like American Idol. Everyone is crying and screaming all the time, even the adults. Of course, I don't expect that real life in USA is like the TV shows, but even in Finnish TV there are things people just won't do. This is why Finnish versions of American format shows usually flop, or end after one of two seasons.
Still, at least you're not Russians.