Christopher Nolan's Inception Challenge

Christopher Nolan's Inception Challenge

Christopher Nolan feels 'Inception' "challenged" him.

The director admits his latest film - which stars Leonardo Dicaprio as a special agent who can enter people's minds while they are dreaming - forced him "build" on his previous movies, including 'Memento' and 'Batman Begins'.

He said: "I've been very fortunate in my career in many ways, but very much in the way in which I've been able to build one film to the next.

"I started with the smallest-possible-scale film, 'Following,' which I made with friends on weekends - just us doing to it. To 'Memento,' which had a real budget and a real cast. I gradually built on that.

"What I've tried to do with every new film is to challenge myself. I don't want to do the same thing again. I don't want to do something I already know I can do. I want to try and do something that builds on what I've learned, that takes it someplace new."

The Oscar-nominated filmmaker also admits its the first film he has made that has not disappointed him at any point.

He told MTV News: "It's probably the first one that's at this stage of it that hasn't shrunk.

"Normally you get to a point where you've worked on it for so long, you've seen it so many times - sound mixing and putting visual effects in, editing over and over again - there's a point where it becomes something less than you thought it was. It becomes smaller - just geographically or physically. "I think 'Inception' resists that. Partly it's because the world of the human mind, the idea that you can kind of go anywhere in this story, means that its limitations are hard to get a hold of."