Sony and Panasonic are both hellbent on convincing us their forthcoming super-duper 3D television sets are the future, but before we all start selling off the children and re-mortgaging our homes, how about a little taster of what it might be like? Channel 4, the British answer to a question nobody ever asked, is about to offer up a selection of 3D programming this month, which it dubs as a return to "good old fashioned fun." The menu includes a documentary about the Queen's coronation (in other words, ancient history), a magic show, and even a couple of goodies like Fl