Since A. and I got married, we've spent Christmas with his family. Both of his extended families are in the area, so we get to spend time with both sides of the family. Conveniently enough, one family has their big dinner and celebration on Christmas Eve, and one on Christmas day. And their culinary traditions are divergent enough that it doesn't feel like duplication (except to one's stomach, which is exhausted from the deliciousness).
The Christmas Eve menu: pork, black beans and rice, yucca, flan.
Christmas Day: lasagna, twice baked potatoes, brijole/braciole (beef wrapped around eggs and bacon), etc. Only problem is, I forgot to take pictures, so you'll have to make do with a picture of someone else's brijole. Apparently what you fill it with is personal preference, or at least varies by region.
Hope everyone is having an enjoyable Boxing Day!