CHRISTMAS WEEK SETS RECORD For the third year in a row, the week after Christmas has set an all-time domestic high for seven days of ticket sales. The $355.4 million scored at the B.O. between Dec. 26 and Jan. 1 repped a 6.5% improvement on the previous mark of $333.8 million. Record-breaking week, in which an astounding seven pics grossed more than $20 million each, was kicked off by a robust $186 million weekend, the highest-ever total for a three-day frame. All-time bigg