In the second video Officer Ross put himself in a very bad situation by standing fully in the cars door/window "fatal funnel" He was very lucky. I see this all the time from seasoned veterans.
Another common mistake a see regularly is to see a officer bent over talking into the car with his gun hand resting on the roof of the car. If the suspect pulls a weapon the officer first has to bring his hand off the roof, wasting valuable reaction time, if the suspect decides to pull off or run the first reflex is to grab and hold on. Something you don't want to do is hold on to a suspects vehicle and get dragged down the highway.:smt071