The name of the character Takeshi Morimoto was derived from Takeshi Kaga and Masaharu Morimoto from Iron Chef (1993).
Cordelia says, "Everything's been Clash of the Titans around here." Coincidentally, Alexa Davalos, who guest stars in this episode as Gwen Raiden, would later go on to play Andromeda in the Clash of the Titans (2010) remake in 2010.
Wesley admitted, however subtly, that he really did love Lilah.
Wesley refers to the events of Expecting (2000) in which Cordelia was impregnated by a Haxil Beast and came to full term overnight. Fred and Gunn's surprised reactions would suggest that they were previously unaware of this incident.
Gunn taking out all of Morimoto's bodyguards proved that even if he was not on par with the likes of the Beast, Faith, Connor or Angel, he was still a very capable fighter.