Imagine Derren Brown meets Paul McKenna meets David Blane, all wired into HAL9000 then given special Jedi powers! Squash this all down into a small plastic ball that fits into the palm of your hand and you have 20Q... Intrigued? Well prepare to be absolutely dumbfounded! Think of anything you want, answer a series of 20 simple questions (hence the name 20Q - geddit!) and 20Q will miraculously work out what you're thinking of! Don't think that the questions all require difficult answers though. Oh no... 20Q only has 'yes', 'no' ' unknown' or 'sometimes' buttons! With questions such as 'It is larger than a microwave oven?', 'Can it swim?' and 'Is it flat?' 20Q will somehow work out that you are thinking of a giraffe, a frying pan, a potato or pretty much anything else that you can think of! If it fails with its first 20 questions it will ask another 5 questions before admitting defeat, not that this will happen very o