“[Sam] Bacile, the producer of the film, is not Israeli, and most likely not Jewish, as has been reported, and that the name is, in fact, a pseudonym.”
There’s more from The Atlantic on the search for the folks behind the anti-Muslim film trailer here: “Muhammad-Film Consultant: ‘Sam Bacile’ Is Not Israeli, and Not a Real Name”.
UPDATE [13 September 2012]: “The AP Solves the Mystery of the Man Behind Innocence of Muslims“.
“That man is Nakoula Basseley Nakoula, a 55-year-old Coptic Christian with a criminal past who lives in California.”