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)
Let Me Hear Your Balalaikas Ringing Out - S6-E8
Visible crew/equipment: When Rory is trying to get a very drunk Logan into her car, the boom pole and mic are reflected on the car's windshield. (00:16:05)
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)
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 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)
Fight Face - S6-E2
Other mistake: While in Luke's diner, Luke hands Lorelai a cup of coffee in a 'to go' cup. When Luke puts the coffee in front of Lorelai, the cup makes a hollow sound when it hits the counter, obviously indicating that there's no actual coffee in the cup.
New and Improved Lorelai - S6-E1
Continuity mistake: When Lorelai and Luke are in bed talking about having kids, the first time Luke lies down he is on a blue striped pillow, but the second time it is a light brown pillow.
Factual error: Rory pulls out a seating chart to find a place to seat Shira, but when you see the seating chart, there are no names on it.
Continuity mistake: Rory and Lorelai are talking on cell phones and Rory has her hands full with her pencil and her cell phone and every time they cut back to her her hair has been moved around. It goes from being behind her shoulder to in front of her shoulder, then completely behind her neck without her touching it.
Friday Night's Alright for Fighting - S6-E13
Continuity mistake: When Richard hands Rory her martini, she puts it on the table in front of her. In the next shot she puts it down once more.
The Prodigal Daughter Returns - S6-E9
Visible crew/equipment: When Rory returns home Lorelai rushes out and they hug, then as the steadycam operator circles them the camera casts a moving shadow on Lorelai and Rory. (00:41:55)
The Prodigal Daughter Returns - S6-E9
Visible crew/equipment: Right after the opening sequence, in the shot of Emily reading the newspaper at the table, the T-mark is visible on the floor beside the door. (00:04:50)
Visible crew/equipment: At the DAR event, after Emily finally tells off Mrs. Huntzberger, when Emily takes her seat the white T-mark is visible on the floor near her chair. (00:42:20)
Visible crew/equipment: After TJ gives Tom the "special" hammer, when TJ walks over to Rory's bedroom door the white T-mark is visible on the floor under the table. (00:17:15)
Fight Face - S6-E2
Visible crew/equipment: When George, the architect, starts walking out of the diner, the T-mark (looks like chalk) is visible on the floor beside Luke's chair. (00:28:45)
Continuity mistake: When Loralie is having lunch with Paris, as Paris is leaving at about in Lorelai is wearing tennis shoes. As she walks into the kitchen she has heels on. (00:09:00 - 00:10:00)
He's Slippin' 'Em Bread... Dig? - S6-E10
Visible crew/equipment: After Rory calls Paris to tell her she's going back to Yale, when Lorelai walks into the kitchen and removes her jacket, the red T-mark is visible on the floor behind her chair. (00:23:35)
Continuity mistake: Rory is wearing black gloves when she is packing up her car and finds her community service vest, but in the shot facing Lorelai as Rory hands her the vest the glove is gone, then it reappears. (00:04:45)
Visible crew/equipment: When Paris calls Rory while she's at the DAR office with Emily, in the shot of Paris as she walks away from the coffee cart toward the bench, a yellow tape mark is visible on the ground in front of the bench where Paris will sit. (00:13:40)
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.