The dollhouse in Mrs. Kim's shop when Lane tells her the band is breaking up is the same dollhouse Lorelai had as a child that Richard drops off in Welcome to the Dollhouse (6.6).
The song sung by the Town Troubadour at around 11 minutes in is Merle Haggard's "Mama Tried," a semi-autobiographical song from 1968 about Haggard's youthful stint in prison.
There is a black & white poster of a Playboy bunny on the wall of Rory's room. This is actually a photo of feminist Gloria Steinem, back when she worked undercover in a Playboy club, as part of a writing assignment which resulted in the story "A Bunny's Tale".
According to the mugshot Lorelei puts on the fridge, Rory's birthday is 10/8/84, she is 5'5" and 115lbs
When Lorelai asks the desk officer if Rory will end up "in the system," she recounts an episode of NYPD Blue (1993) where Sipowicz's son was arrested. Detective Sipowicz's son (Andy Jr) was played by Michael DeLuise - the actor who plays T.J. - Luke's brother-in-law.