Since Numberphile was launched, we've been asked when we'll cover 42.
The number was immortalised by Douglas Adams in The Hitchiker's Guide to the Galaxy.
So we've posted the video in the build-up to what would have been Adams' 60th birthday (he sadly died in 2001 at the age of 49).
For fun I offered to upload the video a day earlier than planned if our Facebook followers gave us 42 "thumbs up" likie thingies.
This happened within minutes, reassuring me it was a video that people were keen to see.
It is posted below.
PS: Note the video's duration... proof that I'm the biggest nerd of all!