Visible crew/equipment: When the family walks into the kitchen after ALF was talking to Jody, you can see the set lights.
Strangers in the Night - S1-E2
Visible crew/equipment: After Mrs. Ochmonek closes the door after the pizza is delivered, a shadow of the boom mic can be seen on the door.
Visible crew/equipment: Right after Kate tells ALF he is not to drink beer a boom mic is visible.
Visible crew/equipment: After Neal answers the door, Mrs. Watson asks 'May I come in?' When the camera cuts back to Neal saying 'Oh gee do you have to?', look in the background to see a shadow of a person move across the cabinet. (00:12:00)
Visible crew/equipment: When Kate says they are going on a hike a boom mic is visible.
Answer: Mr Tanner actually asks Alf, "Why are you carrying our towels through the den?" The streaming subtitles are wrong when it substitutes "damp" for "den" twice. It's possible the error originated from the VHS or DVD, which occurs often.
Super Grover ★
Yes, I was re-watching episodes, and I heard "den" the next time. Thank you for answering, though.