This just in... PC World has conducted some important research into how to employ knowledgeable sales assistants - oh, no, doh! - no, it's the UK's top five sci-fi gadgets ("in full," it says here, which means they list all five). Number one is the Star Trek Teleporter, two is the Men in Black memory eraser, three is a Star Wars Light Sabre, four is James Bond's mobile phone-controlled car, five is Dr Who's TARDIS.