I'm the most Kkkrackkkers of Amerikkkans so my tradition is just getting drunk off mulled wine and re-watching bad holiday movies with relatives I only kinda like.
I'm sometimes a little jealous of people who have weirder shit going on, like gremlins who slam doors and steal sausages or shitting Christmas logs. We need to bring back weird ass half-pagan shit.
I'm Polish-American, so we break bread, specifically these church wafers called pwatki(sp?). Also around that time and New Years, there's the tradition of "Cannibal Sandwiches". Despite making plans of being pescatarian in 2 years, I will be enjoying some raw beef on rye this year.