Xander dresses as a pirate in All the Way. Giles calls him “Ahab” after the captain in the novel Moby Dick by Herman Melville. In Deep Down, Gunn says that Wesley has “been playing a little Ahab”.

In All the Way, Kaltenbach hums the tune of ‘Pop Goes The Weasel’. The rhyme has several versions, but the most well-known stanza goes:
Half a pound of tuppenny rice,
Half a pound of treacle.
That’s the way the money goes,
Pop goes the weasel.

Steven Anthony Lawrence, who played the kid harassing Xander in the Magic Box in All the Way, has also appeared in Cheaper by the Dozen, The Cat in the Hat, Shriek If You Know What I Did Last Friday the Thirteenth, My Favorite Martian, Frasier, ER, The Amanda Show, Sabrina, …

Charles Duckworth, who played Glenn in All the Way (the vampire who says, “Excuse me! Can we fight now?”), can also be seen in Fat Albert, Thirteen, Cold Case and Wanda at Large.

Dave Power, who played Janice’s date Zack in All the Way, can also be seen in Latter Days, Frailty, Band of Brothers (as Private Dietrich), Malcolm in the Middle, One Tree Hill, ER, Boston Public, That ’70s Show and Becker.

Kavan Reece, who played Dawn’s vampire date Justin in All the Way, has also been in The Rules of Attraction, All About Us and That ’70s Show.

Alice Dinnean Vernon worked the demon puppet in As You Were, and was the hand behind the mummy hand in Life Serial. She’s also worked on Sesame Street, The Muppet Show, Men in Black II and Bear in the Big Blue House. Alice was one of the puppeteers in the …

Buffy gets drunk with Spike in Life Serial. The last time we saw her drinking was in Beer Bad. The first time she had alcohol was in Reptile Boy.

In Life Serial, the nerd’s van is parked near the UC Sunnydale notice board, which Buffy and Faith fought in front of in This Year’s Girl.

Jonathan’s demon-making spell in Life Serial is ended with the words “let the spell be ended”. In The Replacement Willow enjoined the two separated Xanders using the same words.

Jonathan’s spell to put Buffy in a time loop in Life Serial is “Opus orbit est, et ea in medio, tempus ad calcem intendit”. Roughly translated it means “The work is a circle, and she is in the middle, the time stretches out”. The spell also needs a bone, a …

Warren’s call sign in Life Serial is ‘Logan Five’. Andrew and Jonathan answer to ‘Francis Seven’. This is a reference to the 1976 sci-fi film Logan’s Run in which nobody is allowed to live past the age of 30. It starred Michael York (as Logan 5), Richard Jordan (as Francis …

In Life Serial, Tara says, “One time, when me and Willow were watching…” This may be a nod towards Alyson Hannigan’s character Michelle in American Pie who kept repeating, “And this one time, at band camp…”
In Tough Love, after Willow explains to Buffy that she was teaching Dawn about …

The episode title Life Serial comes from the breakfast cereal Life Cereal.

In Life Serial, Willow’s class is studying the ’social construction of reality’. The lecturer’s name is Mike, who leads a lively discussion unlike any I ever witnessed in college. The students confusing Buffy are Rachel, Steve, Ruby and Chuck. Buffy wishes she could take “Introduction to Pies”, or “Advanced Walking”. …