According to a report in the Radio Times in 2014, the Twelfth Doctor's white button-down shirt was added to the long black coat and Dr. Martens look as a tribute to rock star and style icon David Bowie's "Station to Station" album cover from 1976.
The Tenth Doctor:
The Fifth Doctor: No, I'm fine, thank you.
The Tenth Doctor: Oh no, of course, you mostly went hands-free didn't you? It was like, "Hey, I'm the Doctor, I can save the universe using a kettle and some string! And look at me, I'm wearing a vegetable."
Each episode has a pre-credits sequence, and a trailer for the following episode at the end. Episode one has no pre-credits sequence(except for 5.1 " The Eleventh Hour", and episode thirteen has no trailer.
In Season 5, Amy has a prologue that only exists in syndicated versions and isn't present in the original UK airings. It doesn't appear on home media (DVD) either.
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