Personalised Briefing
On the other hand I cannot recall a flight in recent years where, if I have been seated in an exit row I haven't been given a briefing (carriers Air Berlin, Swiss and SATA Internacional).
What I can recall is Alex757 as has intimated, just how many passengers believe the general safety briefing / video is NOT DIRECTED AT THEM and that their newspaper or the inflight mag. is of infinitely more importance than the briefing which might save their lives, and more importantly the lives of others!
On a separate point, what also bothers me is the shear quantity of baggage that is brought into the cabin these days, which, in the event of an emergency must be a severe hindrance to a smooth evacuation.