By no means do all visitors to an Apple Store do this nor employees working there, but my gripe is directed to those who have the very annoying habit of pounding the palm of their hands or forcefully banging knuckles down against the butcher block tables that the products are displayed on. Be grateful that everything sold is readily accessible for each of us to use and no time limits are imposed. Is it too much to ask for people to be considerate of the fact that others are only a matter of 1-2 feet away and are easily distracted by the noise and vibrations caused? The stores are hectic as is from multiple conversations and music playing, but that is perfectly normal for such a place. No reasonable person expects an unrealistic church-like condition to prevail, but please save the full arsenal of nervous habits for when you are within the privacy of your own place. The energy of an Apple store is fun ... just be mindful that you are not alone. Thanks.