I started writing a list, but it doesn't do it any justice. Just like listing 10 big companies won't circumscribe the feel of Silicon Valley, a list of goofiness won't peg Berlin. But hang out in Kreuzberg for a weekend and you'll get it. :-)
Berlin is still living on the energy from the wall coming down almost 20 years ago. The west side was long a quirky occupied island hundreds of kilometers behind the iron curtain and the east was the first place where people rebelled and started down the path that reunited the city.
(Note: I've visited 28 countries and lived in 8 cities, so this isn't just cheering for the home team.)