The Lame Duck Congress - S2-E6
Visible crew/equipment: At the end of the episode there is a camera visible in the oval office. After President Bartlet and Toby leave the office an attendant enters to turn off the lamps in the oval office. The scene widens as the lamps are turned off such that the audience can see the entire darkened room. The production equipment, a camera on tripod, and even a crewmember's leg are visible between the penultimate and final lamps being turned off. (00:41:50)
Visible crew/equipment: As Bartlet enters the Oval Office, Babish stands waiting inside. The shadow of the panning camera darkens Babish's face considerably as it moves right to left. (00:39:20)
Visible crew/equipment: When Donna opens Josh's Christmas gift, actor Bradley Whitford's mic pack is visible on screen tucked behind his belt. (00:37:55)
NSF Thurmont - S6-E1
Visible crew/equipment: When the motorcade is driving up you can see part of the film crew in the background.
Chosen answer: A really annoying innate lack of sense. My friends and family say the same thing all the time, and I'm endlessly trying to correct them. I think people just don't know any better and (ironically) couldn't care less that they're speaking incorrectly.