When the umpteenth variation of “Dead of the Living Night” comes on television, it’s tempting to deride the caliber of entertainment available today. And I do, but as human beings we’ve always had something of a spotty track record when it comes to spectacle. Imagine a huge tent filled with people waiting for somebody to be shot out of a cannon. Not long ago, that was entertainment. Before that, it was bear-baiting and feeding people to wild animals. Maybe we’ve come further than we think.