"The Devil and Homer Simpson"
This one is my favorite of the three stories. It involves Homer selling his soul to the devil for a donut. Lionel Hutz also appeared in this one with some great moments such as the part where he flees from the trial.
"Nightmare at 5.5 Feet"
Even though it is the weakest of the three, it is still very hilarious. It has some great Skinner moments as well such as "I hear that a child on this bus is using his imagination, and I've come to put a stop to it."
There's a really good story with non-stop humor. There's the part where Burns forgets to turn off the intercom, Homer's ignorance that Burns is a vampire, and the ending where they start singing, which is one of the most random endings I've ever.