Cat tells Kara that Kara is having an "end of Working Girl (1988) moment" Calista Flockhart is married to Harrison Ford, who starred in Working Girl (1988).
Helen Slater (Eliza Danvers) and Laura Vandervoort (Indigo) have both played Supergirl themselves: Slater in Supergirl (1984) and Vandervoort in Smallville (2001). They previously worked together in Lara (2007) and Blue (2007).
The "Champagne Trick" that Kara does at the end of the episode is a reference to the same trick that Superman does in Superman II (1980) when he invites Lois to the Fortress of Solitude.
The last episode to air on CBS. The second season moves the show to the CW network and to film in Vancouver, British Columbia, Canada.