Gretchen's couples card lists her and Robert's address as 146 Bonny Meadow Road, New Rochelle, New York. This address is a reference to The Dick Van Dyke Show (1961) - Rob and Laura Petrie lived at 148 Bonny Meadow Road in New Rochelle. Millie and Jerry Helper's address would have been 146.
Chelan Simmons, who plays Gretchen Speck-Horowitz in this episode, also plays a character named Gretchen Speck in the second episode of the 2013 drama serial Hannibal
Fox aired this episode out of order, it should actually be the second episode. It's in the correct order on the DVD.
The song We Used To Be Friends by The Dandy Warhols which plays in this episode would double as the theme song for Veronica Mars, another series that launched in 2004.