Doctor Who star Matt Smith has materialised in the record books.
The actor is officially recognised as the youngest star to take the role in the new edition of Guinness World Records.
The 2011 book also features another record for his hit show, which is listed as the longest-running science-fiction TV series in the world.
Smith - who made his debut as the Time Lord last year - was just 26 when he filmed his first scenes, three years younger than Peter Davison.
And the show has extended its own record for a lengthy run, after notching up 769 episodes up to June of this year, made up of 212 storylines plus a TV movie.
The last time book bosses included the category, the show had run to 709 episodes and 173 stories. This year, publishers have included a whole section dedicated to Doctor Who records.
Another well-loved BBC One show is also included for a record-breaking run. Casualty is the longest-running "primetime" medical drama with in excess of 700 episodes broadcast since 1986, surpassing shows such as ER.
But US daytime show General Hospital is still the longest running medical drama, with more than 12,000 shows.
Casualty's executive producer Belinda Campbell said: "It is an absolute thrill to be able to call Casualty the world's longest running primetime hospital drama.
"It's a great testament to the hard work and expertise of the casts and crews over the years that Casualty is now in its 25th year and still in such fantastically good health."