Visible crew/equipment: When Sarah and Kyle have run into the factory, the Terminator is breaking through the armour plated door. As the Terminator comes through you can clearly see the two operator guys crouching behind the model.
Visible crew/equipment: When the Terminator is blown up inside the gas truck and you think it is destroyed, Linda Hamilton and Michael Biehn begin to hug. In the shot where the Terminator begins to rise from the destroyed truck, look just a little to the right of Linda's head and you'll see a mans head pop up and his hands pull down on a lever that makes the Terminator rise up.
Visible crew/equipment: When Sarah is being loaded into the ambulance, the boom mike's reflection is briefly visible in the left rear window. You need slow-mo to notice this one.
Visible crew/equipment: In the police station, you see all the police officers running to get the automatic weapons. There is one shot where a red dot is seen to be following one officer (and it's sometimes on his back). No cops are facing the back of this cop, the Terminator is not around this part of the station, so it must be off the camera.
Visible crew/equipment: As the Terminator moves his right arm whilst in the press, you can see a crew member, behind the Terminator, move in the area of the picture where its arm was.
Visible crew/equipment: When Kyle and Sarah escape in the pickup truck, the Terminator chases after them on a red motorcycle. The camera does lots of shots of what's behind Kyle and Sarah and what's ahead of them. When they overtake a truck, you can see headlights following and shining on the back of their pickup. These are the camera crew's lights, as the Terminator's motorcycle is too far away, and previous shots have shown there are no other vehicles around them.
Visible crew/equipment: When Schwarzenegger rises to his feet after getting blasted out the window, a production vehicle and a couple of huge stage lights behind him are visible.