During the scene where Tara and Willow kiss after getting back together, Amber Benson accidentally used tongue on Alyson Hannigan.
When Willow and Tara reconcile, the dress Willow wore during the song "Under Your Spell" from Once More, with Feeling (2001) is seen hanging on her bedroom door behind Tara. This is a reminder of happier times, before Willow and Tara began to fracture due to Willow's use magic.
The Doublemeat Palace is shown for the last time on Willow's Macbook for a few seconds, as she is looking through the camera feeds.
When Willow and Tara talk at the university, Tara wears the leather jacket Dawn attempted to give to Buffy in Older and Far Away (2002).
Anya mentions to Buffy her former lovers, but Buffy counters with that "there have only been four- three! Three! Three guys." This line refers to Buffy's past sexual partners Angel, Riley Finn, Parker Abrams, and (secretly) Spike.