Want to learn more about the Doctor? Then read on to discover some fab facts:

• The Doctor is more than 900 years old.
• The Doctor is always known as just 'the Doctor'. He has no proper first or last name.
• The Doctor says he could fix the control which keeps the TARDIS in the shape of a police box, but he likes it the way it is.
• The first thing the Doctor said to Rose Tyler the first time they met was "Run!" It was his advice to her to get away from the Autons.
• The Doctor absolutely loves humans. He thinks we are "amazing" and "brilliant".
• The Doctor was knighted by Queen Victoria. She gave him the title Sir Doctor Of The TARDIS.
• If any of the Doctor's limbs are cut off within the first 15 hours of his regeneration cycle, they can grow back straight away. This was witnessed when the Sycorax leader chopped of the Doctor's hand in battle.
• The Doctor has a wide range of gadgets including the sonic screwdriver, the psychic paper, which shows people what they want to see and of course the TARDIS.
• The Doctor's home planet is Gallifrey and the rest of his race were destroyed in the last great Time War with the Daleks. He is now the only Time Lord left in the universe.
• The Doctor's biggest enemies are the Daleks. He thought they had all been wiped out in the Time War, but he was very, very wrong. Even now there is at least one out there...
• The Doctor always refers to the TARDIS as a girl.
• The Doctor was on board  the Titanic when it sank in 1912 and had to cling to an iceberg.
• The Doctor has met loads of historical figures on his time travels including Charles Dickens, Madame de Pompadour and Queen Victoria.
• Even though he's called the Doctor he doesn't like hospitals and says they give him the creeps.
• The Doctor says that Time Lords "practically invented black holes".
• The Doctor has two hearts.
• The Doctor can feel the Earth revolving beneath his feet.
• The tenth Doctor has a mole between his shoulder blades.
• John Smith is the name the Doctor uses when he wants to disguise himself. When he met Queen Victoria he called himself James Robert McCrimmon.
• The Doctor has no control of the body he will get when he regenerates.