When Homer and Lenny are enjoying their new glasses, they look up and see the show's title screen, breaking the fourth wall.
The last time an office supply theft occurred at the Springfield Nuclear Power Plant was in How I Wet Your Mother.
Smithers mentions that the doctor said to take Mr. Burns in if he displays kindness or warmth, referencing the episode The Fool Monty where it shows that kindness will kill Burns, while evil will make him live longer.
The couch gag is a realtered version of a British TV channel, Channel 4, introduction to the Simpsons. The original version had Homer lie on his hammock with the Duff at his head, which bounced onto the cables when he lays down. Furthermore, after panning out to show Springfield, the different lit-up areas formed the Channel 4 logo, a 4. The sequence of Homer climbing the tree is completely re-used. The Channel 4 logo outline can also be seen in the city streets.