I've never watched "Smallville" or "Supernatural", so I cannot comment on that. (I tried with SV as I am a Superman fan, but it was too much teenage drama for me and I did not feel to be the targeted audience).

Okay, then I offer you this: Just ask if you have any questions or something does not make sense, and we'll try to explain? Oh, and since you were asking about the airing date - it's today in the US and Canada.