The song " I Feel Free" by Cream plays during the montage showing Homer alone at home and during the episode's ending.
When Homer and Julia was slurping the spaghetti together is a reference to the Disney film, .
Lady and the Tramp When Smithers is changing the face of the children to "something else", he changes them to Dr. Zoidberg, Abraham Lincoln and Mr. Potato Head.
The Oculus Frink (or Froculus) is a reference to the Oculus Rift.
The Wilhelm scream is heard from one of the creatures in hell.
Mr. Burns does a Nazi salute when marching in one of the virtual reality games he was playing.
Homer watches at least five out of the seven movies from the Police Academy franchise at once.
When Homer is laying on the roof, he says " Snoopy knew what he was doing, all right". This is a reference to a common gag on the Peanuts series where Snoopy does lots of activities on the roof of his doghouse.
It is revealed who the neighbors behind The Simpson House are.
Maggie talks once again in this episode.
The eyes of Mr. Burns's painting inside his guest house moves.
Smithers has at least some knowledge of programming, as he managed to make Burns's virtual reality game by himself. However, it's unknown if someone helped him or not.
Just like Rabbi Hyman Krustofsky, Dr. Nussbaum's last words were "Eh".
The Absolut Krusty bottles on the shelf behind Moe disappear between scenes.
When Julia throws Homer a beer, Homer grabs a toy rocket on the roof to hide his crotch, but a few scenes earlier, the green Frisbee was the only thing on the roof.
The door at Dr. Nussbaum's office changes from brown to white between scenes.
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