With the actor's latest being in 'J.Edgar' directed by Clint Eastwood, he shares how much he prepares for his roles and how this most recent frustrated and fascinated him all at the same time.

After two decades of working as a professional actor, he reveals that it is this character that he hated playing the most. 'Why' is the main question that he kept asking on the process of studying the life, works and controversies that the ex-FBI director went through.

He may have openly stated how much he dislikes the character but this does not mean that he has less desire to have played the character at his best capability.

"I really just gravitate towards roles that I want to learn more about.. if there's a mystery to the person, that's when I get more involved,' the "Shutter Island" and "Inception" actor shared.

As advice to other aspiring actors in the industry, he wants to remind everyone how fleeting the career can be. According to one interview he did, there are certainly points in your career that you would find the iron striking hot that all you have to do is take advantage of the opportunity to do what you want to do best, for the benefit of your own career.

"There are times when your career is hot and people want to see your work and there's other times when people lose interest. But while I'm in the fortunate position of being able to choose what I want to do, I'm gonna do that," Leo said.

DiCaprio is also known to be a very hardworking actor who even travels to the places where he can get to learn and prepare more about the character he is to portray. When he was cast to play Hoover, he even went to Washington, D.C. to meet up with the people who have known the director in the past. He wants to know the character even with the smallest details like how he makes others laugh or how he even eats.

In short, Leonardo becomes totally someone else and transforms into the character he is playing which makes him a very in demand actor these days.

"If somebody says to you, 'You weren't at all like yourself,' that's the greatest compliment you can pay an actor,' according to his co-actor in the movie, Judi Dench.

DiCaprio has made a name for himself in the films included in his resume just like 'The Boy's Life,' 'What's Eating Gilbert Grape,' 'The Basketball Diaries,' and a lot more. And with films that are set to be made by the young actor like 'Gatsby' and 'Django Unchained,' the run of his career simply shows no signs of stopping.

With 'Titanic' to be released once again in the 3D format, this could add up more to the popularity ranking of the actor.

"Being able to do that with almost any type of movie you want to do is a huge privilege. It's been a huge gift," Leo said on his role as Jack for 'Titanic' played out with Kate Winslet.

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