Since Oct. 1, local mother of three Danielle Campbell has been beside herself in anticipation of the Halloween episode of the popular CBS sitcom The Big Bang Theory, and has so far spent the month leading up to Halloween speculating about the plotline and romantic twist the episode might contain. 'I wonder if Sheldon will dress as another science concept, like lasers,' the 42-year-old woman who hasn't gone out for Halloween herself in two decades said with a giggle. 'I hope they don't all dress up like the Flash again! But it was on that very same episode when Leonard and Penny kissed for the first time. Bazinga!' Campbell then scanned through her Big Bang Theory DVDs to comb them for information about possible candy allergies that might play a part in the episode. 