My mother usually hosts Christmas eve and makes barbeque beef of some kind. I don't eat beef so can't tell you more except it looks like pulled pork (which I also don't eat) and people pile it on fat sandwich rolls.
My whole childhood, this is what my grandma made for Christmas Eve. We probably had the same Christmas Day meal year after year, too, but what I remember most is the BBQ on Christmas Eve at my grandma's.
Now that I'm all grown up and stuff, with my family and Tim's family to juggle, we end up having Christmas Eve lunch with my dad at a restaurant (often Applebee's), Christmas Eve dinner with my mom and stepdad and stepdad's family (the meal itself often changes; this year for some reason we are ordering in pizza), and Christmas Day at Tim's parents' house (which does basically feature the same meal year after year -- a Honeybaked Ham and even the same side dishes, which I am about to violate this year by making a corn casserole [hey, if they wanted the same thing every year, they should have discouraged Tim from dating such a rabble-rouser]).
We have no Christmas morning breakfast tradition because we are lazy and usually in a rush cooking what we need to bring to Christmas dinner. t edit Actually, I think Tim bakes a pastry of some kind, which I can't eat, so then I grumble and make an egg for myself. It's the magic of Christmas.