I am intrigued most by the obscure spectrum of the hobby in regards to parts, bikes, history. In fact I tend to collect more towards the less popular and obscure. I really don't like having what everyone else has. I know most of us have a bike, maybe a part or two that is fairly obscure whether it is a regional deal, a one off, or from a small lesser known company.
I could be polite and ask but that gets you nowhere. I DEMAND you post something from your BMX collection that is obscure (all eras).