It is rumoured that Joss Whedon originally hadn’t decided whether it would be Willow or Xander who turned out to be gay. Xander’s conversation with Larry in Phases could have been a foreshadowing for his future had Xander been homosexual and not Willow.

In the episode Phases, when Buffy is talking to Willow and Xander she stops and stands in front of a noticeboard. If you look to the right of her shoulder, you can see a little notice thanking all of the Buffy fans at the official website.

Keith Campbell played the werewolf in Phases. He is a stunt man who has appeared in Mission: Impossible, Face/Off, Blade, Batman Forever, Vanilla Sky, Stargate, The Last Action Hero, Forrest Gump, The Ring and Patriot Games. He did stunts in Inspector Gadget which starred Michelle Trachtenberg (Dawn) and for Dead …

Jack Conley, who played Caine the werewolf hunter in Phases, also played the time-shifting demon Sahjhan in seasons three and five of Angel. Jack has also been in Payback, L.A. Confidential, Mercury and Get Shorty.

At the end of Innocence, Buffy and her mother wach the movie Stowaway, a 1936 musical starring Shirley Temple, Alice Faye and Robert Young. The song “Goodnight, My Love”, heard in the episode, is sung by Faye and Young.

In Innocence, Spike and Drusilla attempt to get rid of humanity by reassembling the Judge. This makes no sense considering that in Becoming (Part 2), he admits to Buffy that he loves the “Happy Meals on legs” in the world.

In Halloween, Oz drove a zebra-striped van with right-hand drive. His van changes to a dark left-hand drive van in Innocence.

A large part of the episodes Innocence and Graduation Day (Part 2) rely on Xander’s recollection of the events of Halloween, when he became a soldier for a short time. In Innocence he says he still has all his memories of being a soldier, including “procedure, ordnance, access codes, everything.” …

Buffy says of the Judge in Innocence, “No assembly required,” which is a reference to an episode title from earlier in the season.

Willy was a human bartender who owned Willy’s Place, a demon bar in Sunnydale. Various Scoobies beat Willy up, threatened to beat him, or paid him money, to get information about new demons in town. Willy usually knew what was going on in town, but pretended not to.

Angelus scrawled the words, “Was it good for you too?” in blood on the wall at the scene of his murder of Uncle Enyos. During his DVD commentary, Joss says he’s amazed at what Buffy is sometimes able to “get away with.”

Angelus cruelly dismisses Buffy’s concern for him the first time they meet after having sex. This scene is in his bedroom in Innocence and Buffy can be heard saying she saw him at “the house”. The scene had actually already been filmed outside of Buffy’s house, but no-one was satisfied …

The pouring rain in the scene where Xander visits the military base to steal a rocket launcher (Innocence) was not in the script. The rain poured down in the outside shots and Joss was delighted as it added so much atmosphere to the scene.

The shopping mall and multiplex scenes in Innocence were shot inside a Los Angeles department store on South Grand Avenue called Robinsons. The production team constructed a trench to stop the water from the sprinkler system from flooding the shop.

The final fight between Buffy and Angel in Innocence takes place in a movie theatre lobby which is lined with posters for the movie Quest for Camelot, an animated film which was released in 1998 by WB.