extraordinary moments. reporter: surveillance video, dashboard cams and cell phones catching this year s most dramatic and bizarre moments. take a look at this. an officer stopped to inspect a fallen tree limb and narrowly escaped being crushed by another giant branch or how about this video from georgia where a clerk took on an armed robber by fighting back by hitting him in the face with her hands and the cash register. this guy wasn t after money. apparently he needed a board or go to catch a surf. it s not just criminals caught on tape. look at these people creating a human chain to save the driver of a car engulfed in flames or these heros in alaska coming to the aid of a driver whose car flipped over and caught on fire.