When Dwight tries to save Kelly, his shirt is wet but in the next camera shot his shirt is dry.
When Michael asks Ryan to call his cell phone to make it easier for Dwight to find, Michael picks it up with his left hand and turns away from the camera saying "I better tell somebody." The cell phone is still in his hand, although when the camera cuts to when Dwight emerges, Michael's cellphone disappears and is not in his hand.
When Michael and Ryan are talking in the back seat of the car, you can see the circle of the others just over the roof line. If you imagine the circle as a clock with Jim at 12, the others fall in this order: Pam, Kevin, Oscar, Meredith, Angela, Phyllis, Toby, Creed, Stanley. In the next scene, the group has completely shuffled and the order is Jim, Phyllis, Creed, Kelly, Toby, Meredith, Oscar, Angela, Pam and Kevin.
At 9:22, when Michael, Dwight and Ryan are looking into the back of Ryan's car, the camera pans to the left and a camera man and light panel are visible to the left of the firetruck.