The girl the Julia character is based on can be scene is the flashback where Stan meets Beth in the Supermarket. She is standing in front of Beth at the checkout counter. She is also an extra in the bar scene.
Swooped was originally an 11 page short, written in the back of a Honda Civic on a road trip back from Orlando. Shaun and Joe decided to make it a feature when other things happened between them in their personal lives.
Sal the Bartender, played by Don Manigly, is based on an actual bartender from Cookies Tavern. In the film, the real Sal can be seen standing next to Vinny Bumbatz, played by Joe Raffa. Sal is the real life cousin of Joe Gariffo, and the character Sal is Jack's cousin in the film.
"Here's to Us Fools" by Jesse Draham is the opening credit song written specifically for the film. The song actually came about because of the New Found Glory song "Ballad for the Lost Romantics". In that song, there is a lyrics "here's to us fools that have no meaning." Joe Gariffo and Jesse Draham both have tattoos that say "Here's To Us Fools". Jesse likes that New Found Glory song, but hates New Found Glory, so he wrote his own song with those lyrics.
When Jack is beating up Stan, Joe Gariffo accidentally punched Shaun Paul Costello in the face. Also, Joe hit Shaun for real at the end of the film, so when the Stan character says, "you really hit me!" it's because Joe really hit him.