Continuity mistake: When Fry looks up at the clock tower the display reads "04:26" which implies it is 4 in the morning, instead of before sunset. In addition, once he has climbed up to the top of the tower, the clock has no 0 before the time and simply reads "4:26". The zero returns right at the end of the episode, in a wide shot of New New York. (00:12:40)
Continuity mistake: While Fry is commenting on it being his first Christmas without his family, it can be seen that the door to the hallway is open. but when Hermes comes in, there's the sound of the door opening. Also, Hermes waves the two stacks of cards. The stack in his right hand has a red envelope in it that changes to white in the wide shot.