hi my name is andrewWilliams i cannot think of a positive way to expand bitcoin, nor am i socially accepted in real life to ever meet or know anyone good enough to promote bitcoin. thus i will just troll the forum thread and not actually contribute.
i dont know any famous people but i will insult any name others suggest for the pure hell of it
maybe me editing the above will show the true meaning of your replies (pure waffle) and might make you answer properly:
IF YOU DON'T LIKE THE GUYS MENTIONED, THEN TELL US WHO YOU HAVE IN MIND THATS BETTER