Attention Earthlings: You might not make it after all. Mary Tyler Moore is replaced with a walnut-eating, water-breathing alien with eyes in the back of her head. And Dick Van Dyke is the last human alive... for now.

Science fiction fans are like the bacteria in your stomach: most of the time, they help to keep you healthy. But when the pH balance goes wrong, and the bacteria start running the show, they can make you sick. We've expressed our view that Star Trek deserves euthanasia partly because it inevitably caters too much to…