At each presentation, I use this valuable table flipchart. It comes before yes often enough that we show a film and it "really great would find" when a previous slide still clearly remains in the minds of the audience. Dream on, the audience just grins and the film has previously forgotten after two seconds. This table-flipchart simply show the previous major film, then nobody is overworked and the presentation will remain in blissful memories. (It does not matter whether the audience then ever listened)