Once or twice a year, I throw a pinball/arcade party at my home and invite mostly work folks and spouses, some of which who are into pinball and most who aren't. Part of the party is a short tournament with *good* prizes. I keep it all very accessible and noob friendly, and don't pressure anyone to play the games. So far one friend has took the plunge and Became a pin owner (JP) and another has almost convinced his wife to get one . So I'm making a small dent.
Jack