Trivia: In this episode, Lisa mentions that it's the 300th time that Homer has gotten into trouble, and Marge says 'I could have sworn it was 302'. This is a reference to the fact that this episode, the one heavily publicised as the 300th episode to air on TV, was actually the 302nd due to scheduling problems. "The Strong Arms of the Ma" was the actual 300th.
Trivia: At the end of this episode, Homer has a barbecue with a banner that reads "Homer's 305th 'Everything is Back To Normal' Barbecue", even though this is the 306th episode. This is because everything was not back to normal at the end of Who Shot Mr Burns? Part 1, the only Simpsons cliffhanger.
Trivia: At the beginning of this episode, Homer writes his own Christmas carol after being barred from performing traditional carols because of copyright issues. Around seven years after this episode aired, the musical artist Usher was ironically accused of plagiarizing one of the tunes Homer was working on with his song "OMG."