What companies are notorious for their interview process?

I’ve heard that Google are notorious for their interview process both in the questions they ask and the number of interviews they do. Examples of the questions: http://www.businessinsider.com/15-google-interview-questions-that-will-make-you-feel-stupid-2010-11

So I was wondering, if there are any game studios that have a reputation for tough/difficult interviews? I can’t imagine given time and money constraints they can really drag interviews out for too long.