Story : He is a living legend; a man who was a part of the greatest model railway based children's programme of all time. He provided the voices for the fab four: Thomas, Henry Gordon and the Fat Controller � Mr. Ringo Starr. He was also in The Beatles. Also appearing on this week's show, Sir David Attenborough; friend of the Rwandan gorilla, pal of the bat and generally on nodding terms with fish.