How do you view Americans?

I'm American and I'm interested to know how the UK views us - not specifically about our politics, though I'm sure that's a major factor that defines our image, but more about our culture and our people in general. For example, some of us ociate British with tea and crumpets, refined speech, bad teeth (I think it's totally untrue but for whatever reason that's one of the few stereotypes), Monty Python, etc. What do you think of when you think of Americans? What are some of the stereotypes? Don't worry about being polite - contribute whatever thoughts you have even if it's offensive or silly.