The "Ocean's Thirteen" actor – who stars opposite Blanchett in Steven Soderbergh's black and white wartime drama "The Good German" – was scared to work with her because she is so talented.

He said: "She is the best actor working today. She is not an actress, she's an actor. It was intimidating, in a way, to work with her. She is so good."

Clooney is also convinced Blanchett, who plays an American journalist lured into a murder mystery, deserves an Oscar for her performance. He said: "I will tell you right now – she will win the Oscar."

Clooney recently admitted he prefers working behind the camera these days.

He said: "Directing is the key to filmmaking. Everything else is just paint as far as I'm concerned."