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7. Ashton Kutcher: IQ 160
He can certainly make you laugh, both with him and at him – and he doesn’t strike you as particularly intelligent. This next one might come as surprising, but 40 year-old goofball Ashton Kutcher is one of the smartest people in Hollywood. With an IQ matched apparently only by Matt Damon (see number 1 on our list), Ashton is part of a very, very exclusive ‘club’ – those of people with IQs higher than 150, which amounts to less than 0.5% of the population. Pretty impressive!