I do see certain effects demonstrated and why that can lead to some calling them 'tricks' or indeed showing off. That doesn't mean what they are doing is not real but it doesn't impress me. Why? Because over the years I have learned many ways of doing things that look impressive and yet find in myself it's o.k. as part of learning but not what I call Aikido. In fact onlookers love those things and want to know how it's done but that to me defeats the purpose of doing Aikido unless I want to be a circus act.