The "Reversal of Freedom Act of 1994" is actually a reference to the 'Endangered Species Act' which forces landowners to take care of any endangered animals that that take up residence in their land.
When Homer is on his way to the electric chair, the music in the background is from the movie's soundtrack.
The prisoner who asks Homer to "Give me your hands, boss" and then threatens to kill him is a parody of John Coffey (played by the late Michael Clarke Duncan)
Chief Wiggum sheds a tear after Homer is strapped into the electric chair, as does prison guard Dean Stanton at John Coffey's execution.
The music is played again (briefly) just before the closing credits roll.
The TV show Frame Up may be a reference to, and parody of, hidden camera prank reality shows, like Candid Camera and Punk'd.
Trivia
Homer is convicted of buggery. While meant to sound like a crime against insects, it's actually a British term for male homosexual intercourse, which, in Britain, was considered a crime.
At the end of the episode, Bart claims he ate so much shrimp, but in "Please Homer, Don't Hammer 'Em," Skinner finds out that Bart has a shrimp allergy.
When Homer first lifts up Mrs. Bellamy, the scissors aren't seen in her back.
When the family is seen at church, Apu and Sanjay are both present. They are both Hindu and shouldn't be there.
The people seen at Homer's execution are:
ā¢ Ned Flanders
ā¢ Mrs. Skinner
ā¢ Principal Skinner
ā¢ Moe
ā¢ Lenny
ā¢ Patty and Selma
ā¢ the Man With Braces
ā¢ Grandpa
ā¢ Apu
ā¢ the Screaming Caterpillar
ā¢ Former President George H. W. Bush