Once described as the 'rock star version of Willie Wonka', Michael Acton Smith is emerging as one of the major players in Britain's high tech industry. You may not have heard of him, but any five to eleven year old will know of his Moshi Monsters video game website, where children tend a virtual pet. Moshi Monsters is growing rapidly and has 50 million members worldwide. Acton Smith began his first business in the late 1990s when he was not long out of university. Despite recent success he has suffered major setbacks in the past. Rory Cellan-Jones profiles the 37 year old who is already making waves beyond these shores. Producer: Kate Dixon.