Chet Grissom, who played the Detective in This Year’s Girl has also been in Robbery Homicide Division, MDs, The Practice, CSI: Crime Scene Investigation, Any Day Now, Ally McBeal, Time of Your Life and The X Files.

In Goodbye, Iowa, Buffy and Xander accost Dr. Angleman in room 1317210. Leading off from this room are the rooms A18 and A17. Dr. Angleman is killed outside room A18.

In Goodbye, Iowa, Buffy and Xander spoof The Weather Girls song It’s Raining Men (Buffy: “…it’s raining monsters”. Xander: “Hallelujah”).

The Scoobies watch a Road Runner cartoon called ‘Wild About Hurry’ on Xander’s TV in Goodbye, Iowa.

In Goodbye, Iowa, Buffy wears ‘yummy sushi pyjamas’ (”That probably would have sounded more commanding if I wasn’t wearing my yummy sushi pajamas.”). They are made by the same company, The Cat’s Pajamas, that made the butterfly pyjamas she wore in Beer Bad. The Yummi Sushi flannel PJs cost …

In Goodbye, Iowa, Willow tells Tara about the demon-finding spell: “When the potion mixes and Thespia is called, it creates this mist over the parts where the demons are. It even makes different colors for different breeds.” She then embarks on the spell: “Thespia, we walk in shadow, walk in …

In Goodbye, Iowa, Anya is wearing Xander’s shirt from Something Blue as a pyjama top.

In Goodbye, Iowa, we see the mirror ball in Xander’s basement which he hung in The Harsh Light of Day.

Spike calls Buffy “Goldilocks” (after the children’s story Goldilocks and the Three Bears) twice in Buffy: in Goodbye, Iowa, he says, “Got to hand it to you goldilocks - you do have bleeding tragic taste in men I’ve got a cousin married to a regurgitating Frovalox demon that’s got …

In Goodbye, Iowa, Adam says he is a, “kinematically redundant, biomechanical demonoid. Designed by Maggie Walsh. She called me Adam and I called her mother. In addition to organic material, I’m equipped with GP-2/D-11 Infrared detectors. A harmonic decelerator, plus DC servo.” Yeah, all that and he’s still only got …

The following lines were deleted from Goodbye, Iowa for length:
Willow: “I bet you will.”
Buffy: “No. No bet. I will make it work.”

In The I in Team, Spike says, “I don’t care if it’s playing Rock the Casbah on the bloody Jew’s harp…” Rock the Casbah is a famous song by The Clash. A Jew’s Harp is a small musical instrument which is held against the teeth or lips, and plucked with …

J. B. Gaynor (John Bernard Gaynor) played the kid skewered by Adam in Goodbye, Iowa. He can also be seen in Venomous, Hellraiser: Inferno, The Contract, Come On, Get Happy: The Partridge Family Story (what a great title!), I’m Losing You, Touched by an Angel, Grounded for Life, Chicago Hope, …

Walsh tells the Initiative boys in The I in Team that the Polgara demon is “Sub-T 67119″. Their numbering system must be all over the place as Spike was called “Hostile 17″ when he was captured by them.

The music playing whilst Buffy and Riley fight demons/make love in The I in Team is ‘Window to Your Soul’ by Delerium.