Well the winter bash is almost over and the hats are nearly gone, that means the year is close to its end and it's time to look back.
What was your favorite post from BSE this year?
Question or answer, post the link as an answer below.
By favorite I mean anything you found awesome, learned something new, was surprised by, impressed, etc.
This is not necessary a best of list, more like the most memorable post from 2017.
What a year BSE has had. We have had 12,098 questions and 9,435 answers (and counting).
Here's to an even better 2018!