One of the most grueling onscreen interviews has to be from The Departed (2006). It's set in FBI's office where Leonardo DiCaprio's character can't wait to shed his family's ill reputation by becoming a cop. The proverbial good guys. But it can't possibly be THAT easy for him so, the interviewer is tough on him. Tough is actually an understatement. Mark Wahlberg was brutal. At the end of the interview, it becomes obvious why what just happened happened. Leo's integrity wasn't under the scanner. It was his perception about himself and where he comes from. He wasn't supposed to be deluded. You see, it's easy to let go off one's family roots but once you do that, you are on your own. That interview was an assertion of this ground reality.