The Little Black Book: Part 1 - S3-E16
Visible crew/equipment: In both part 1 and 2, when the KAOS agents are staking out Max's house, a crew member is reflected on the frame of their car's windscreen.
The Little Black Book: Part 2 - S3-E17
Visible crew/equipment: When Max and Sid are talking to the CONTROL lawyer, a square reflector screen is reflected in the CONTROL lawyer's glasses.
The Wax Max - S3-E20
Visible crew/equipment: When an arrow is fired at the boat in the Tunnel of Love scene, the wire attached to it is visible.
Visible crew/equipment: When Max and 99 are trapped in the room with the hatch that leads down to the Guru's chamber, the filmmakers didn't bother to make it seem like a giant hole in the ground, and they also didn't bother about the floor of the set being about ten centimetres below the hatch.
Visible crew/equipment: In the motorcycle joust sequence, when the Purple Knight falls off his bicycle, his helmet flips up and you can see it's a stunt double - the Purple Knight's beard is gone.
That Old Gang of Mine - S3-E10
Visible crew/equipment: When the Turk is breaking into the palace, he pushes the window and it just swings open, since it is unlocked. However, you can see hands belonging to a crew member pulling the windows open to make way for the gag.
Visible crew/equipment: Lights are reflected in the aide's glasses when Max and 99 are talking to him on the ground.
Visible crew/equipment: When Siegfried throws the cup into the air and Doctor T holds it up with his force field, a wire is visible holding the cup in the air.
Witness for the Persecution - S3-E3
Visible crew/equipment: When Doctor Baskum demonstrates the cube of safety, a moving boom mike pole is reflected in the glass of the cube.
Witness for the Persecution - S3-E3
Visible crew/equipment: Set lights are reflected in Doctor Baskum's glasses when he and Max are talking in the kitchen.