Day 198: Fury From the Deep Episode 1

It's an odd thing, when you find the beginning of a well known joke, the first moment when you see something and you realise that it works differently to how you thought it would. Such a point arrives here when we see the introduction of the Sonic Screwdriver. It unscrews some screws and is then put away, treated as a little space-age tool that the Doctor carries around with him. We're used to it being a joke nowadays, but back when it was introduced, it was just a throwaway remark. They couldn't have known how well known this little object would become, and it's funny that of all the things that Doctor Who is trying to make into a household name, it is this that sticks the most in the minds of people, with this little sonic device. It'll detonate mines, disable Cybermats and be used as a metaphor for the Doctor's love life, but it all began with a pen shaped object that unscrewed screws, sonically.