My employer always closes between Christmas and the New Year. They extended it to the entire week of Christmas this year, and due to some other obligations I actually ended up taking the entire week before also.
I work in acadaemia, but in a staff/support position(not faculty, although I teach classes some). Truth be told, I sort of wish we were open at least a few days between the two. Due to our strange spring semester schedule, classes start back on January 6th(most schools start at least a week later). I have a LOT to get done in the 2 days next week before the start of classes, so will probably be working a couple of long days in those two days.
For that matter, I might end up going in on Monday and part of the day Tuesday anyway. I expect I can get a lot of my "grunt work" done a lot more efficiently when no one else is there to bother me, so will have a less hectic Thursday and Friday. I just have to keep a low profile(which will be somewhat difficult with what I DO need to do) as I know there will be other people there and WILL jump at the chance to ask me to do other stuff outside the "mission critical" tasks I need to have done and will be there to do.