To create the picture of young Jim and Dwight, a high school photograph of John Krasinski was photoshopped alongside a 1991 picture of Rainn Wilson. At the time, Wilson was touring with an acting company.
Angela Kinsey improvised the jelly bean moment.
Though the Jim slap was scripted, Rainn Wilson was surprised at the timing of the hit. Wilson had also asked John Krasinski to slap harder throughout takes.
When Angela went to drink coffee with Pam, she uses the code names 'Noelle' and 'Kurt' to tell her what happened that morning. These are the middle names of Angela and Dwight, respectively.
Angela Kinsey stated on the Office Ladies podcast that the reason Angela doesn't want the office to know about her and Dwight is because Angela knows Dwight is her true love and wanted to protect him from the scrutiny and judgment of their co-workers.