Tippecanoe and Taylor, Too - S5-E4
Visible crew/equipment: After Lane and her bandmates listen to the tape with the song Believe It or Not (theme song of The Greatest American Hero), when Zack says, "I'm not wearing smelly wood on my face," the T-mark is visible on the floor at Brian's feet. (00:29:00)
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.