Remember Bewitched? Back in the day, we bet you had your face pressed up against the screen, waiting to see what mischief Samantha would make next. You may even have tried to do that iconic nose-wiggle yourself! But while the show looked like a whole heap of fun to shoot, there was a lot going on behind the scenes. Get ready, then, for 40 secrets that Bewitched’s producers probably wanted to keep schtum. And, yes, that includes exactly why the show was canceled…