I have had a couple of parties at the house and snuck a couple of people into the office to show them my test mame machine. My wife comes up to me and starts saying, "why are you imposing your dorkiness on these people?" But people love that stuff. I would go up to one of them and say, "hey, what was your favorite arcade game going up?' nine times out of ten its galaga, people love that game. Anyhow, I boot up my FE, pulll up galaga, and their jaws drop. Then I say, come, on, that was too easy, give me something else. After a few minutes they are all giggling and amazed.
The single women were all impressed, they were like "as soon as you get this built we need to have a pacman tournament!"
Everyone has something dorky about them, the key is you don't advertise it. I don't go up to people and say, hi, I collect old video games, what's your name? Nothing to be ashamed of, but nothing to hide.