Who would be John Galt?

A tip of the sou’wester to Kennedy vs. The Machine

Lionsgate has picked up worldwide distribution rights to "Atlas Shrugged" from Howard and Karen Baldwin ("Ray"), who will produce with John Aglialoro.

As for stars, book provides an ideal role for an actress in lead character Dagny Taggart, so it's not a stretch to assume Rand enthusiast Angelina JolieAngelina Jolie's name has been brought up. Brad PittBrad Pitt, also a fan, is rumored to be among the names suggested for lead male character John Galt.

Okay, who is John Galt? And for that Matter Dagny Taggart,the only woman in the world metaphysically worth sleeping with?

Suggestions?