 CONT: During the chase scene at the end of the movie, Neo steals a  phone from a man in a black suit. As he runs off, the man starts  shouting and pointing at him. When we see the man from behind,  although hes still shouting in the same voice, the actor is clearly  Hugo Weaving (qv) as Agent Smith, with his gray suit and different  hair cut. The sound effect to indicate the transformation into Agent  Smith isnt played until quite a few seconds after the change of  actor and costume.