Most definitely the build up but sometimes I wish I wouldn't build it up so much. I know that sounds crazy but like Dominick I am normally very disappointed come the actual day. We used to have HUGE Christmas celebrations but in the past few years my sis and family haven't been able to come home and my nephews have gotten older (and not so much into it anymore) so the family aspect is gone. My parents moved from our family home so that is gone. Normally it is a very quiet day, not much more different than any other day of the week.