Sean Penn: 'Human Experiment' at Mill Vallery Film Festival

Sean Penn attends the premiere of his new film The Human Experiment held during the 2013 Mill Valley Film Festival on Sunday evening (October 6) in San Francisco, Calif.

The 53-year-old actor, who is the film’s narrator, recently announced that he will be sponsoring five Haitians in the New York City marathon next month.

“We’ve got five Haitian runners, 10 runners total, running for the team representing Haiti and our organization J/P HRO coming to the New York City Marathon – the marathon. So we’re really looking forward to it,” Sean told the Associated Press. “It’s rewarding. I just came back from Port-au-Prince, where I visited our Haitian marathon runners, and to see that great discipline that Haitians have and that great spirit and the excitement that they have visiting New York for the first time.”

10+ pictures inside of Sean Penn at the premiere…