Robert Downey Jr is an amazing actor. In the 80s, he starred in movies with his contemporaries from the 'Brat Pack'.  In the 90s, he was nominated for an Academy Award for his role in 'Chaplin' and in more recent years he's been in billion dollar grossing films like 'Iron Man' and 'The Avengers'. 

Recently he was doing an interview with a U.K. television station while promoting his upcoming blockbuster 'Avengers: Age of Ultron'. However the British journalist conducting the interview spent a lot of time asking Robert about his well-known history of substance abuse from earlier in his career. You can clearly see that Downey was getting uncomfortable with the way the interview was going. So he got up and walked out saying the interview was getting "a little too Diane Sawyer" for him.

Coincidentally I once had the opportunity to meet Robert at a radio convention in San Francisco in 1992. It was right around the time of his highly acclaimed film 'Chaplin'. Rather than bombard him with a ton of questions, I just simply asked him one. "Would you mind having your picture taken with me?"  He obliged and here is that picture of me next to the future Iron Man. (I kept my copy of it, I wonder if Robert still has his).

(Robert Downey Jr and Brent Ackerman- 1992)