Visible crew/equipment: When Frank starts choking a boom mic can be seen above the table for a prolonged period of time. (00:18:45)
Visible crew/equipment: In the opening scene, you can see the boom mic drop down into the picture.
High School - S2-E10
Visible crew/equipment: In the kitchen you can see someone walking outside the kitchen window but nobody walks in.
Visible crew/equipment: Robert pushes Ray into accepting his offer to go on a citizen's ride-along. They are initially sitting on the couch at the time, and when they rise, if you look closely behind where Ray is standing, through one of the kitchen windows you can spot a production crew member.
Good Girls - S2-E19
Visible crew/equipment: After Debra goes upstairs angry, Ray says up to her "Forget about Miss Congeniality, that's for sure." During the shot immediately following this, you can see a microphone at the top of the screen for a second. (00:07:30)
The Toaster - S3-E12
Visible crew/equipment: Throughout the episode lighting reflections can be seen in The Toaster, which is most noticeable in the opening and when they are at Bloomingdales.
Older Women - S6-E9
Visible crew/equipment: Someone appears behind the kitchen door, when Ray goes, "and I can see how that can make you all... Man-hatey...", and hangs around behind the door for several seconds. (00:15:55)
The Kicker - S6-E11
Visible crew/equipment: After Robert throws The Ball through the window, if you look between Ray and the door frame, you can see the arm and leg of the crew member that actually threw The Ball through the window. (00:12:15)
Answer: War.
By whom?
Edwin Starr.