The photos of Eddie Vedder, Billy Duffy (of The Cult), Kim Gordon (of Sonic Youth), and Anton Newcombe (of The Brian Jonestown Massacre) that hang above Zoey's bed are taken by photographer Sherry Lee (who also colored the film and is a producer on the film as well).
The T-Shirt that Christopher wears while walking up the stairs in the beach house is the same shirt that Chris Pontius can be seen wearing in Sofia Coppola's new film Somewhere (2010). Called the "Let's Party" t-shirt, it is made by the company Bloodhorse Clothing.
At the end of the film, the last john to pick up Zoey is actually Sherry Lee (photographer, producer, colorist on the film). The voice of the "john" is writer/director Dustin Lane.