Hideki Kamiya has a very nice collection, and i love his Ninja Warriors dedication, not many games you can play on a 3 monitor setup like that.
A very good quote from him, "some of them are 30 years old, and like antiques". I think these days it is more about preservation and archeology in some aspects, there are games at risk of being lost to time (eprom damage etc.)
@ShouTime, in your video, is that the kitchen/sink and kitchen cupboard filled with pcb's?