This episode ranked 7th out of 12 WB shows for the week.
This episode scored a 2.3 in the fast nationals.
Series star Charisma Carpenter does not appear in this episode.
First episode to feature Robia LaMorte as Jenny Calendar.
This episode marks the first time Willow's home is shown in the series.
During the scene where Giles is listening to the radio in the library, the announcer is voiced by series creator, Joss Whedon.
Giles: When I've examined it, you can, uh, uh, uh... skim it.
Ms Calendar: Scan it, Rupert. That's scan it.
Giles: Of course.
Ms Calendar: Oh, I know, our ways are strange to you, but soon you will join us in the 20th century with three whole years to spare.
Giles: I'm - I'm just gonna stay and clean up a little. I'll, uh, I'll be back in the middle ages.
Ms. Calendar: Did you ever leave?
Xander: I mean, sure he says that he's a high school student, but I could say that I'm a high school student.
Buffy: You are.
Xander: Okay, but I could also say that I'm an elderly Dutch woman. Get me? And who's to say I'm not if I'm in the elderly Dutch chat room?
Buffy: I can just tell something's wrong. My spider-sense is tingling.
Giles: Your spider-sense?
Buffy: Pop culture reference. Sorry.
Ms. Calendar: You're here again? You kids really dig the library, don't you?
Buffy: We're literary.
Xander: To read makes our speaking English good.
Xander: He's in a computer. What can he do?
Buffy: You mean besides convince a perfectly nice kid to try and kill me? I don't know. How about mess up all the medical equipment in the world?
Giles: Randomize traffic signals.
Buffy: Access launch codes for our nuclear missiles.
Giles: Destroy the world's economy.
Buffy: I think I pretty much capped it with that nuclear missile thing.
Giles: Right, yours was best.
Moloch: (to Willow) Don't you see? I can give you everything! I can control the world! Right now a man in Beijing is transferring money to a Swiss bank account for a contract on his mother's life. Good for him.
Buffy: Hey, did you forget? The one boy I've had the hots for since I've moved here turned out to be a vampire.
Xander: Right, and the teacher I had a crush on? Giant praying mantis.
Willow: That's true.
Xander: Yeah, that's life on the Hellmouth.
Buffy: Let's face it: none of us are ever gonna have a happy, normal relationship.
Xander: We're doomed!
(they all laugh about it, then stop once they realize what this means for them)
Buffy: Besides, I can just tell something's wrong. My spider sense is tingling.
A reference to Spider-Man, who is known for saying his spider sense is tingling whenever he senses trouble.
I, Robot... You, Jane.
This is a reference to Tarzan and Jane
. Tarzan, the main character, spoke poor English and made "Me, Tarzan. You, Jane" a well-known catchphrase.
The first half of the episode is also a reference to the Issac Asimov book of short stories entitled I, Robot