Thiiiiis might be interesting. Two out of three of my canons are not terribly well known but neither are they particularly obscure. I would love to jump on some Sheldon threading but I suppose the first thing to do would be to establish if he has played or is familiar with the Lunar series or the Mother/Earthbound series. Lunar has been remade so many times for so many game systems that it's possible he's encountered it. And Mother/Earthbound has been re-recognized in the U.S. thanks to Super Smash Bros. In any case, I'm a friggin' walking and talking Lunar encyclopedia and handy with Mother/Earthbound info.

On another and rather odd note, Mia is familiar with her husband Draco's canon, so Harry Potter series talk is a-ok with her.