Two actors are credited in Innocence but they do not actually appear in the episode. Their parts were ‘Teacher’ (James Lurie) and ‘Student’ (Parry Shen). Their scenes, in which Buffy runs out of class after having bad thoughts about the sex she had the night before, were cut due to …

Speaking admiringly in the DVD commentary for Innocence of the performance of Robia La Morte as Jenny Calendar, Joss Whedon comments. “And what did we do to thank her? We killed her”.

Ryan Francis, who played the soldier who questioned Xander in Innocence, previously played the young Peter in Steven Spielberg’s Hook.

Spike calls Dalton a “wanker” in Surprise. The BBC wouldn’t allow the use of the word (and it was cut when shown in the UK), but it’s full meaning doesn’t seem to be widely known in the U.S., which is why Joss was able to get away with it there. …

Why, why, WHY do Buffy’s friends throw surprise parties for the Slayer? Let me repeat that… The Slayer. Who has demons and vampires jumping out at her all the time, and has really sharp reflexes. Who carries a weapon nearly all the time. Now that’s the kind of girl you …

The song that plays during Buffy’s dream in Surprise is an original song called “Anything”, written by Buffy composers Shawn K. Clement and Sean Murray and performed by Cari Howe.

Giles says in Surprise, “Discretion is the better part of valour.” This is a paraphrase of a line from Shakespeare’s play King Henry IV in which Falstaff says, “The better part of valour is discretion”. (Part 1 Act V Scene 4).

Xander says to Buffy in Surprise, “You ground his bones to make your bread,” referring to the events of season two’s opener When She Was Bad, when Buffy destroyed the Master’s bones. It’s also a reference to the classic fairytale Jack and the Beanstalk, where the giant shouts: “Fee fi …

The docks shots in the episode Surprise were filmed in San Pedro, California. The water was warmer than expected because of a warm, El Nino current.

Surprise was the last episode to air on a Monday in the U.S. It aired on Tuesdays from the next episode on, so the second part (Innocence) was shown the day after Surprise.

Spike and Drusilla appear in Surprise for the first time since What’s My Line? (Part 2). Spike was damaged badly in that episode and is now in a wheelchair.

The Judge was nicknamed “The Smurf” on set because of his blue colour, a reference to the cartoon characters in the 80s TV cartoon The Smurfs. In Innocence, Buffy calls the Judge a Smurf.

Jenny Calendar drove an old Volkswagen Beetle, seen in Surprise when she gave Buffy a lift to the Bronze.

Roger Stoneburner played a vampire in Surprise and Becoming (Part 2). He also played a vampire in the Angel episode ‘Disharmony‘. He is a stuntman and did stunts for Spider-Man, Carnivale and The X Files.

Sarah Michelle Gellar discussed love scenes on Buffy in an interview with The Independent newspaper in June 2002:
“Love scenes are never the most comfortable things in the world. The best thing about it is I have been with the same crew for six years so they are like my …