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STORY: French director Luc Besson has praised Scarlett Johansson for her performance as a woman with a super-powered brain in his new film 'Lucy', saying he was impressed at their first meeting because she arrived on time.

Johansson plays the eponymous Lucy, a woman who can stop traffic and move objects with her mind after a drug planted in her body causes her brain to operate at abnormally high levels, and eventually at 100 per cent capacity.

"I was very happy with the first meeting because she was on time (laughs), she has no make-up and she has no entourage, so she comes as a decent person and it was just about meeting and talking about the subject and she asked tons of questons about the brain and where I got the information and then she read the script and she come back with more questions and I was very pleased by that, she was acting like a real worker who wants to make it good," Besson said.

The special effects-laden mo