Visible crew/equipment: When the killer throws Tyson off of the balcony, you can see the black fabric of the landing mat fly up after the stunt double lands on it. (01:20:20)
Visible crew/equipment: When the two detectives drive into Sunrise Studios, Kincaid says he's going to talk to studio brass about the photos. Wallace gets out of the car, and Kincaid tells him to keep an eye on Sidney. As Kincaid drives off, we can see the reflection of the microphone and also a bit of the camera beside Kincaid. (00:52:45)
Answer: Not expressly, though it could have been the date of some significant event (December of 1988) but someone as security-conscious as Sydney now is wouldn't be stupid enough to have her code be something that could be guessed.