A random 'glitch' has been put in this DVD deliberately. randomley when you start the first episode, the screen will go wobbly and the narrator will talk funny. it will have "DONT PANIC" in big, friendly pink letters and the words "The improbability drive has been altered in your DVD. Please reset the DVD player." This is good humour for anyone who has seen this movie will know what an improbability drive is... well... anyways there it is.