I was wondering whether anybody knew of any TV/movie experts that answer questions either in columns or just to the person who asked the question. I sent one once to Parade Magazine but it never got published. It would be helpful because I write fan fiction with in-jokes and allusions, and it would be nice to confirm whether something is true if there's no mention of my guesses on IMDb , in DVD commentary, etc.

I think you'd do much better asking questions here unless you stumble upon someone that was connected with a specific show.