Twenty-One Is the Loneliest Number - S6-E7
Visible crew/equipment: While Lorelai is adding whip cream to her pancakes, when Luke answers the phone call from Rory, the T-mark is visible on the floor behind the counter. (00:26:40)
Fight Face - S6-E2
Visible crew/equipment: After TJ has put up the three wood shelves at the diner, when he tells Luke that the top shelf is an engagement gift just as he walks around the counter, the white T-mark is visible on the floor where TJ had been standing. (00:05:45)
He's Slippin' 'Em Bread... Dig? - S6-E10
Visible crew/equipment: While Lane and her bandmates are at Sophie's music store, two T-marks are visible on the floor. (00:16:50)
Visible crew/equipment: When Emily enters the diner and says hello to Luke, two yellow T-marks are taped to the floor, then when she approaches the counter the actor's blue tape mark is visible at Luke's feet, and as Luke walks to the coffeemaker another tape mark becomes visible. (00:40:20)
Visible crew/equipment: After Paris leaves the inn, when Lorelai goes into the kitchen and teases Michel and Sookie for hiding, the T-mark is visible at Lorelai's feet. (00:09:20)
Visible crew/equipment: When Maisy sends Buddy to the kitchen to bring Luke and Lorelai the food without garlic, in the next shot just as Maisy tells Lorelai, "It's nice to meet you," the tape mark is visible on the floor behind Maisy's feet. (00:17:35)
Visible crew/equipment: After Rory tells Lorelai that she looks happy, when it cuts to Max telling his class about Emily Dickinson's poem, we can see the boom mic bobbing around at the top of the screen. (00:07:55)
The Fundamental Things Apply - S4-E5
Continuity mistake: Lorelai is in Luke's Diner talking to Luke. Lorelai is wearing a red sweater vest over a white blouse. When Luke is behind the counter, every time the camera faces Lorelai, the left side of her blouse goes from being tucked in under the vest (as if the vest were hastily put on), to being untucked (as it should be) quite a few times.
Visible crew/equipment: When Rory is finally going back to Yale, in the scene where she and Lorelai are standing by the car debating who Paul Anka likes better, Rory gets in the car to drive away, but in the next shot of the car actually driving away, you can see what is a man's arm driving the car. (00:06:50)
The Lorelais' First Day at Chilton - S1-E2
Continuity mistake: Luke uses a red screwdriver trying to get something out of the toaster and leaves the screwdriver in the toaster while he goes to get coffee. When it cuts back to Lorelai, the screwdriver is on the counter, beside the toaster. (00:18:20)
Visible crew/equipment: When Jess shows up at Principal Merton's office because he couldn't get prom tickets, as Jess shuts the office door the hand of a crew member is visible between the door and frame, slowing the moving door. (00:14:30)
Other mistake: The Warner Bros. Studio Tour building is quite a distinctive high-rise, and it's located at the corner of Avon and Warner Blvd across the street from the Warner Bros. Studio backlot, which includes the location set of Stars Hollow town square. During the series, in a few episodes such as "Will You Be My Lorelai Gilmore," that high-rise building can be seen from the town square, past Doose's Market, directly behind Sophie's Music store.
Forgiveness and Stuff - S1-E10
Visible crew/equipment: After Richard is brought to his hospital room, when Luke tells Lorelai that she's avoiding seeing her father, the boom mic dips into view at the top pf the screen when she says, "You know what hurts? A screwdriver in your head." (00:30:25)
The Road Trip to Harvard - S2-E4
Continuity mistake: When Luke offers Lorelai coffee, Luke grabs two paper hot cups, but the camera angle shifts and he is holding only one cup, then the angle shifts again and he is back to having two cups while he proceeds to pour the coffee. (00:38:10)
Continuity mistake: After Dean kisses Rory the second time, when Rory joins Lorelai in her bedroom the lamp sits atop a simple rectangular box to the left of the bed, but in the following shots there's a round table with a pretty table topper and frames, etc. beside the bed. (00:42:00)
Rory's Birthday Parties - S1-E6
Visible crew/equipment: At Chilton, when Rory walks past the girls talking about another obligation party, in the next shot facing Rory we can see lighting equipment at the right side of the screen. (00:08:20)
Rory's Birthday Parties - S1-E6
Visible crew/equipment: When Rory shows up at Luke's to meet Lorelai, just as Lorelai says, "Nice face you got on there," we can see lighting equipment at the top left side of the screen. Then, when Luke brings them coffee it's visible in the shots from the same angle. (00:11:30)
Visible crew/equipment: While Rory is at Luke's doing her homework, when Lorelai walks in and is about to sit down at the table with Rory, the lighting equipment is visible at the right side of the screen. (00:19:50)
Introducing Lorelai Planetarium - S7-E8
Visible crew/equipment: While April is wrapping the gift for Sabrina, when Luke talks to her about the party, the reflections of the set's reflector screen and a crew member wearing blue pants are visible on the toaster's silver surface. (00:23:50)
Rory's Birthday Parties - S1-E6
Visible crew/equipment: After Rory takes Tristan's invitation and walks away, when it cuts to Emily and Lorelai shopping at Damion's, just as Emily notices the hat we can see the crew member and equipment at the right side of the screen. Then, when Emily finds the light-up bracelets and shows Lorelai, some lighting equipment is visible at the left side of the screen and cables are on the floor behind them. (00:08:30)
Chosen answer: Lorelai and Christopher get married impulsively in Paris but they get divorced shortly after returning home. I don't know the exact number of days or weeks but they definitely weren't married for more than a couple of months.