it's a bit weird, but my wife and I spend christmas eve seperate. my wifes family has a very long evening, from 7 pm to about 1 pm. my family has a short christmas, we eat and give each other presents and that's about it. I go drinking with all the friends of my hometown since I'm 13. it's one of my biggest boozing of the year actually, I get totally hammered. this tradition has died off a bit since our regular pubs bartender died (shot in afghanistan during the war as a tourist

).
we then spend the 25th and the 26th at each others parents. maybe we have our first big christmas with both families in our new house this year, who knows
that being said:
24th: my brother decides what's for dinner, he was trained a cook before becoming a food engineer. it's a surprise so I can't tell what it's going to be
25th/26th: one of these days my mother will cook, she's a teacher for domestic economy. I have to admit I'm pretty fortunate with food servings in my family

the other day my father-in-law is cooking. he cooks only on christmas, not another day during the year. he's always cooking a stuffed turkey in beer sauce. pretty good I have to admit!