When you meet Sean Penn at his Malibu home, you get the man in his element. Barefoot, with black paint speckled across his hands from an afternoon spent in his carpentry woodshop, the actor settled into his living area with a pack of American Spirit cigarettes and his German shepherd standing guard nearby. There is a raw, grounded quality to the setting, and his decision to go without shoes mirrors his conversational style: stripped of padding and entirely unbuffered. It is a setting that