Visible crew/equipment: In the scene where John, Sarah, and The Terminator are in the Cyberdyne building. They have just come down in the lift into the lobby where the SWAT team are waiting and firing gas cylinders. Arnie says his "I'll be back" and walks out of the lift. The SWAT team issue various instructions, then say "OK - drop him!". Now - look carefully. The second they start to fire, look at the SWAT member who is furthest to the left and standing up. If you look right by his shoulder as soon as they start firing, what looks like a crew member walks into the scene, with his hands in his pockets. (01:58:51)
Visible crew/equipment: In the scene where the Terminator is stood at the broken window of the Cyberdyne building, just after he has shot the police cars with the Gatling gun, he uses a grenade launcher to fire a grenade through the side window of a police car below. Look carefully and you will see a rectangular package, presumably a small charge fitted by the special effects team, on this side window exactly where the window smashes to simulate the grenade smashing the glass a split second before exploding inside the car. (01:48:30)
Visible crew/equipment: After the tow truck plunges into the canal and John takes off on his bike, there's a shot starting low on the truck and craning up to windshield-level. You can see a reflection in the truck's paint job, next to the grille, of a large light and a crewmember. (00:34:05)
Visible crew/equipment: [Special Edition only] Shortly after the Terminator shoots up the police cars outside Cyberdyne, the SWAT team enters the building through the front glass doors. When the shot changes from outside the building to inside, the camera dolly and cameraman are visible in the reflection on the glass doors and windows. (01:54:30)
Visible crew/equipment: In the scene immediately after the Truck vs Harley vs Dirtbike chase where John Connor demands that the T-800 pull over for a "time out", as they pull to a stop and start to have a conversation the boom mike is visible reflected in the shiny black mudguard of the Harley's front wheel moving back and forth between the actors as they say their lines. (00:39:10)
Visible crew/equipment: When the T-1000 is chasing John on his motorbike aboard the truck, as it is going to hit two cars in the traffic you can see in the shot from the truck's side the camera car used for the frontal shot on the background, and simultaneously, as the camera changes angle, you can see a camera protected in the box attached on the side of the truck used for the previous shot.
Visible crew/equipment: When Arnie is airborne on his cycle in the canal scene, you can faintly see the wires holding up his bike - from just around his shoulders right before he lands to until it switches scenes. (00:37:15)
Visible crew/equipment: After the T-1000, disguised as Janelle, impales Todd, it hangs up the phone and pulls the blade out of Todd's head. As he slumps forward away from the cupboard and drops out of frame, you can see the retracting-blade rig that was attached to the right side of his head, creating the illusion that the blade was pulled through his head. Frame-by-frame helps on this one - it's visible for the last 3 frames before he disappears, just past his chin. (00:41:25)