Like many good ideas in Supernatural, it already exists in Buffy. (Season 1, Teacher's pet. This is the exact plot of this story, the teacher is a giant praying mantis).
I suppose. I haven't watched Buffy but I read the summary of the episode and it seems that there are a few differences, also this idea could be spun multiple ways. But yeah of course I wouldn't want Supernatural to just copy Buffy's ideas. The question is, where do we draw the line between copying and "Simpsons did it" syndrome?
Heh it's cool that you don't take it the wrong way^^ Many of the earliest episodes were copycats of another's plot (the one with the children seing a monster when they were sick was entirely like Kindestod from Buffy, only less cute) but yeah, with the seasons passing it's less and less present.
Anyways both are good in their ways!
Hell yeah, I should start watching Buffy, I've only seen a few episodes (the one where they were in a musical was hilarious). But anyway a lot of the monsters in both series are simply taken from various folklores, myths and legends so they will obviously overlap somewhere.
Anyways both are good in their ways!