This is the kind of subtle detail the scientists are looking for as they build a picture of what conditions were like on early Mars and the possibility that the planet could once have harboured simple lifeforms.

BBC: Nasa's Curiosity Mars rover to ingest drill sample soon

To watch Mr. Trintignant in these moments, and to hear the subtle modulations of his spoken words into a kind of dulcet music, is to witness great acting stripped to the emotional bone.

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Kaz: I think that you know, many subtle changes have already come about, in that I kind of bring a different perspective in that I was in Jack's position for 11 to 12 years on the regional headquarters side, where you know, we got a lot of different strategic input from Japan on a lot of issues that would pertain to the North American market.

ENGADGET: & Joystiq interview: Kaz Hirai and Jack Tretton, Presidents, Sony Computer Entertainment, Inc., and America