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)
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)
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)
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)
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)
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)
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)
Visible crew/equipment: After Sookie dumps her pan of ratatouille in the sink she suggests going to Cicero's, and just as Jackson says, "They have good ratatouille. OK, so long as I can keep my shoes on," the reflection of the dolly grip pulling the camera dolly is visible on the window. (00:38:20)
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)
Visible crew/equipment: When April shows up at the diner, we can see the reflection of the moving boom pole and mic at the top of the window, behind Luke. (00:14:00)
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.