We finish a week before the undergrads do (we have projects at the end due the last week of classes usually, no exams). So, I have a lot of things coming up in the next few weeks.
I do a lot of spending time with mike and our families during the holiday. ^^
I don't post at all on Christmas. If I do, it's to post "Merry Christmas" In a crapload of languages... I did that last year on the mirror of our suite bathroom [:p]
I do it every year on Facebook