Visible crew/equipment: In "The Desparate Hours", right at the end when Barraclough is in Fletcher's cell, when Fletcher says, "I never heard nothing" you can see the shadow of the boom mic on his face.
Visible crew/equipment: In the governor's office, when Urwin tells Barrowclough that the governor was instrumental in his plan, the overhead mic is in shot at the top of the screen.