Mena Suvari's character's name in this episode is Allison Cowley, which also happens to be the name of Timothy Omundson's real-life wife.
Peter Weller's character Yin is a professor of romance literature and Weller himself is actually a professor of romance literature at Syracuse University.
Yin tells Shawn and Gus, "no use crying over spilled soda." He uses that same phrase in a note left for them in the previous installment after Shawn knocks over the soda at the movie theater.
Spot the Pineapple: one can be seen in the grocery bag Yang leaves in her vehicle, and another one can be seen as a napkin holder on the counter in Henry's kitchen.
At one point Mena Suvari's character says "Sit Ubu sit". This is a reference to the tagline of Ubu Productions that would play after many popular TV shows of the 1980s.