Corrected entry: Throughout the show, the doors on the inside of the TARDIS (white with circular panels) are different from those on the outside (usually blue police box doors). Numerous shots disprove the notion of two sets of doors. The most obvious incident is the shot near the beginning of The Sensorites that tracks out through the TARDIS doors.
Corrected entry: Lady Cassandra (the skin woman) is claimed to be the last remaining human, but in previous stories set at the end of the world (The Ark and Frontios) other, normal looking humans are seen.
Correction: She actually says that she is the last 'pure' human, all the 'others' were 'mongrels' in that they had bred with other species.
Corrected entry: When Doctor Who mentions his age, it seems to vary enormously between stories. In 'The Tomb of the Cybermen', the Doctor (Patrick Troughton) tells Victoria that he's 450 Earth years old (Since Gallifrey's other qualities are Earth like, and since the Doctor continually boasts of his age to humans, we might assume that there's not much difference between Gallifreyan and Earth years). However, by the time of 'Time and the Rani' (in "real time" 20 (Earth) years later) the Doctor (now Sylvester McCoy) claims that his age is '953'.
Correction: The fourth Doctor (Tom Baker) went on a midnight errand during his first story "Robot" - the results of this undocumented adventure came back to haunt him in Leela's first story "Face of Evil". Therefore the 30 year chronicle of his adventures is incomplete and his personal timeline (and age) is not tied to ours.
Correction: The TARDIS exterior is an automatic "mask" for what is inside, that changes to fit the surroundings (it broke and got stuck as a police box.) When the doors are opened, both the inside and the outside of the doors appear from the outside to match the exterior appearance otherwise opening the door would spoil the illusion.
Dan Moat