Unsold pilot for a series that NBC passed on but aired as a part of a Halloween special.
The remodeled shell of the original 1313 Mockingbird Lane can be briefly seen when Marylin and Grandpa are walking down the street to pass out cookies.
Whereas the original series' Grandpa Munster was a parody of Bela Lugosi's Dracula, this version of the character parodied Gary Oldman's.
NBC chief Robert Greenblatt said of their decision to pass on the series: "We just decided that it didn't hold together well enough to yield a series. It looked beautiful and original and creative, but it just all ultimately didn't come together... it just didn't ultimately creatively all work. We felt great about that cast, but we tried to make it not just a sitcom. We tried to make it an hour, which ultimately has more dramatic weight than a half-hour. It's hard to calibrate how much weirdness vs. supernatural vs. family story. I just think we didn't get the mix right".
When Grandpa restarts Herman's heart, it plays the log-in chime from Apple computers.