The riddle contest was a hit! We received tons of emails, and most of you were correct, the answer was of course Billy Boyd (see the interview here).
The answer key is this: Take 2-1-23-4-9-12-25 13-15-9-12 and replace the numbers with letters. This leaves you with BAWDILY MOIL which is an anagram of William Boyd AKA Billy Boyd.
Those of you with the correct answer will now be put into a random draw to win ‘The Return of the King: The Complete Recordings’ CD box set. Check this space for the winners name soon!