Ugandan tyrant Idi Amin once claimed he was the last King of Scotland, a fanciful claim no one took seriously but made a good movie. Yet we stop in our globetrotting tracks to hear Peter Walker reveal that there was once a Polish king of the huge African island of Madagascar. In perhaps Peter's zaniest episode of Walker's World so far, he's back from his  travels with the most exotic fruit - enough to make Sir Walter Raleigh's  potatoes go off.