How is Berlin's nightlife?? and how are the "berliners"??

All people say that Berlin is the best city of Europe, and has one of the most lively nightlives of the continent, but I would like to know how it really is, when discos and bar close, prices... do people in berlin usually get drunk? do they drink at home before they go to a club, or maybe on a park for example (like in Spain or Scottland)...
And... how are berliners?? A lot of people say that they're a little rude, altough I know one that is living in Spain and he's very funny and polite.
THANX
I cant add much to what has already been said.

I was born and raised in Berlin, so logically I wouldnt describe "us" as particularly rude. Berlin is a major city and like most major cities around the globe, the people who live and work here are stressed out by the fast paced life. During all my travels around the globe I couldnt really see a difference in mentality when it comes to "city people".... NYC, L.A., Paris, London ... same difference :-p

But what is it with this "Berliner" talk? Berliner is a perfectly correct term for the people here. The jelly filled doughnut you are talking about is called "Pfannkuchen" in this part of the country. They call it "Berliner" in other places. But not in Berlin. So anyone who refers to us as Berliners is perfectly correct. Nobody will think of a doughnut :-P ... no worries.