Matthew Mcconaughey is ''extraordinary'' in 'Interstellar'.

Director Christopher Nolan, who is notoriously secretive about his projects, has revealed he was desperate to hire the recent Oscar winner to star in his new sci-fi thriller - which co-stars Anne Hathaway, Jessica Chastain and Sir Michael Caine - after seeing him in critically acclaimed indie hit 'Mud'.

Nolan says McConaughey's performance in that film gave him an ''inside track'' regarding the actor's newfound success, including numerous accolades for his role in 'Dallas Buyers Club'.

The filmmaker told The Hollywood Reporter: '''Mud' showed me a side of Matthew's capabilities that I never knew was there. It was a transformative performance. From when I first saw it, I had an inside track on how great he could be.

''I needed someone who is very much an everyman, someone the audience could experience the story with. He's just a phenomenal, charismatic presence in the movie. His performance is shaping up to be extraordinary.''

Nolan also praised his regular collaborator Caine, who played Alfred in the director's 'Dark Knight' trilogy.

He enthused: ''He comes so prepared and he is just so good with such a minimal effort. I cast him in every film just as an example to everyone else.

''He's just a lovely guy to be around. He jokes that he's my lucky charm. It was a very good strategy on his part.''

The British filmmaker also revealed his policy when it comes to making movies, revealing he puts all of his efforts into the production at hand as if it's his last ever film.

Nolan added: ''I have always viewed every film as the last film I'm going to do. I've always done that because I want to put everything into it. I might get hit by a bus at the end of production.''