According to director Timothy Linh Bui, he cast Ray Liotta after meeting him in an Italian restaurant by pure coincidence. Even stranger was that Liotta was the only customer when Bui walked in.
At the beginning the movie Ray Liotta is standing nude facing the ocean. A moment later, after entering the water, bathing trunks can be seen below the water line.
The visible part of Jack's neck tattoo changes from a roundish, spider web-looking design, to what appears to the the tips of a flying creature's wings.