If my audience is someone who was born before 1970, I'll start by asking them if they remember Randi from his Carson appearances in the 1980s or Uri Gellar if they don't remember Randi. This has actually worked twice for me right have TAM VI. Once with the lady sitting next to me on the plane and then a few days later with my dentist. Otherwise I go with the science and education conference and definitely mention Penn & Teller and Myth Busters, definitely Myth Busters.
I've stopped showing people my membership card with the mission statement. It's too lawyer speaky for most and usually is interpreted as the opposite of what it really means.