Cool Change - S1-E2
Visible crew/equipment: When Nicky is dragging her ex-boyfriend across the hotel room floor you can see green screens outside of the balcony doors and windows. (00:39:45)
Blood Drops - S1-E7
Visible crew/equipment: Near the start there is a visible mic boom just above Grissom's head to the left for a second. (00:03:23)