After the Gang kicks in the door to the house, the damage to the door includes a large vertical crack up the middle, nearly splitting the door in half. When the door is seen again just a few seconds later, the crack is gone.
In the first scene, Dee's shadow can be seen hovering around the door before she enters the bar.
When Dennis and Mac show up while Dee is swimming, shortly after they hand their Honey and Vinegar Real estate business card to Dee's surrogate couple, the camera angle changes and a camera mans shadow is visible on the concrete in front of the couple.
When Frank confronts the people living in the house he bought, right after he delivers the line "I bought this house! We own this house!", a cameraman is visible on the left side of the screen. (Later airings of this episode have the crew member cropped out.)