While Brennan & Booth are eating chili in the diner, a mailman is seen entering the diner twice when the camera pans back to Booth.
Brennen and Booth are talking about their wedding as if it was recent indicating the this episode is out of order chronologically as there have been a few episodes before this one after they got married.
In the opening scene at the school cafeteria, there is a poster on the back wall announcing a tetherball tournament. The poster has the misspelling 'teatherball'.