Or, as they say, bring on the hats.
We participated in the annual Stack Exchange Winter Bash 2014. Because everybody loves hats, we have decided to so again this year.
Winter Bash 2015 will run from 14 December 2015 through 3 January 2016.
If you don't want to wear or see hats, there will be an "I hate hats" button in the site footer.