A look back through the latest chapter — the 2010-11 season — of hockey’s most exciting rivalry.
Dec. 23, 2010: Penguins 3, Capitals 2 (SO)Pittsburgh winger Matt Cooke complains to officials at Verizon Center during first-period action of the teams' first meeting of the season. Both the Penguins and Capitals had been living with HBO cameras and crews for its "24/7" series for several weeks, adding to the tension that always exists when these teams play each other.Jonathan Newton/The Washington Post
President Trump and first lady Melania Trump lit the National Christmas Tree for the first time. The program was hosted by television personality Kathie Lee Gifford and actor Dean Cain and featured performances by the Beach Boys, Jack Wagner, Wynonna Judd, Craig Campbell and others.