I"m in Heaven is about a man who doesn"t believe in God who dies and inconveniently goes to heaven. However it is far from being the heaven that many people believe it to be - all sweetness and light and lazing about on a white cloud with angels playing harps - but something far, far different. For example Sir Michael Caine is there. And Robert de Niro and the Beatles. And, surprise surprise, Jehovah"s Witnesses don"t like being there one little bit.