The filmmaker and Nike scion poured untold millions into his critically acclaimed "grand experiment." But he knows the real test is yet to come.

Other participants at the Sunday event in Los Angeles include 'Tangles' director Leah Nelson, 'Hexed' director Fawn Veerasunthorn, 'In Waves' director Phuong Mai Nguyen, 'Iron Boy' director Louis Clichy and 'Forgotten Island' director Joel Crawford.