David sez, "I recently photographed Art Fry, the inventor of the Post-it Note. After the shoot, I asked if he"d ever seen the Sticky Note Experiments video by Eepybird (the Mentos and Diet Coke guys). It turned out he hadn't. Well, I just happened to bring a copy of the video with me on my iPhone so I could show it to him. I filmed his reaction as he watched it."