Visible crew/equipment: When Audrey enters her father's office to find him in the middle of his Civil War recreation, a boom mic dips into the shot over their heads. (00:18:40)
Visible crew/equipment: At the very end, Sarah is alone while she's lying down, but when she has the sudden vision of Laura's necklace being dug up, the reflection of a crew member is visible in the round mirror. (01:32:50)
Visible crew/equipment: When Sheriff Harry S. Truman first leaves the station, film crew are visible as they dolly back across the Ford Bronco. (00:05:55)
Episode Two - S1-E2
Visible crew/equipment: When Audrey spots Cooper ordering breakfast, her yellow tape mark is visible in the doorway at her feet. (00:04:14)
Visible crew/equipment: When Bobby is released by the police, he speaks to his friend in the hallway of the station about the possible identity of Laura Palmer's killer. To avoid eavesdropping, Bobby tells his friend that they should speak outside. As they walk through the glass doors towards the exit, Bobby encounters his father and two other people. Tape markers are visible on the floor placed at their feet. (00:55:53)
Visible crew/equipment: When Sheriff Harry Truman takes the call from Pete Martell at the police station, a reflection of a seated crew member wearing headphones (it actually looks very much like David Lynch!) is visible in the glass divider of the office the Sheriff enters to answer the phone. Clear as day. (00:05:13)
Continuity mistake: When James is talking to Evelyn Marsh after fixing her husband's car, Evelyn's hand jumps from her lap to the steering wheel between shots. (00:22:00)
Continuity mistake: When Mike Nelson asks Donna for help in dealing with Nadine, Donna's right hand is inside her locker, looking for something. It then mysteriously jumps to the top of the stack of books she has in her other hand. (00:12:45)
Answer: The answer to pretty much any question beginning with "Has David Lynch ever explained _______?" is: no.