After Eric Beale gave a dramatic Braveheart-inspired speech about his bond with Nell, Agent Harley Hidoko said, "You spent some time in drama camp, didn't you?" Eric replied, "I may have dabbled in the arts." The actor who plays Eric Beale, Barrett Foa, did in fact attend the very well-known and prestigious Interlochen Arts Camp for four summers.
"All is Bright" is an allusion to the song "Silent Night Holy Night", and the episode was originally broadcast during the Christmas Holidays.