What to do/see in Prague (US perspective)

(I'll write this in English, because it will be useful mostly for non-Czechs.)

When your friends from abroad come to Prague and ask you to show them around, you face the difficult task of choosing the right things to make it impressive, not boring and in a way representative. That is actually very difficult, especially for someone who was born and has ever since lived in Prague. You don't have the necessary distance to judge what stuff is interesting for a foreigner, because you walk in those streets every day and you have seen all the buildings hundred times. When I came here, I found out that quite many people had actually gone to Prague for holiday, so when I say I'm from Czech Republic, they often know that it exists and even where it is (some still mix it up with Czechoslovakia, but hey, you can't blame them for that:-). And usually they mention something interesting they remember. I thought I might try to collect their impressions and maybe it will somehow prove useful in getting "outside picture" of Prague - either to exploit it or to try to remedy it in some instances!

1. Of course the very very first thing everybody remebers is (surprise surprise) BEER:-) Cheap, good, cheap, thick, cheap, strong, cheap, and cheaper than water will be the most common comments. Usually they get a bit disappointed when I say I don't drink it. I might consider not saying that anymore, actually... (or starting drinking it?)
2. The second impression are beautiful chicks:-) I have no problem agreeing with that (of course after my honey:-))
3. Puppets: One guy here has acquired a particular strong connection in his head between Prague and puppets sold on the streets as tourist souvenirs. Basically Prague for him is The Puppet City
4. "Huge four-storey art museum" where you can spend hours: I presume that is the National Gallery in the Trade Fair Palace in Holešovice
5. Wallenstein garden: an amazing garden with peacocks, and huge owls (I never realized it could be so interesting, but actually, yes:-)
6. Defenestration: Although as far as I know there were only two documented defenestrations in history (1419 and 1618), some Americans tend to think that Czechs routinely solve their issues by throwing people out of windows. I don't really blame them, because this image was probably planted in their heads by Czech tour guides in order to make the tours more entertaining at the expense of historical accuracy. Another related theory explains, that the Catholics thrown out of the window (the second defenestration) landed on a pile of horse dung, which saved their lives - hence the expression: "Holy shit!" ;-))

Will be updated as I gather more observations...