The place was packed and going nuts from beginning to end. The crowd was at least 90/10 Georgetown, with most people wearing the gray Georgetown T-shirts left at each seat, to create a "gray-out" effect. If you look at the people behind Obama and Biden in this picture (including a mid-scream Rahm Emanuel) you get a fair sample of the prevailing mood.
The one person who did not visibly react in any way to any play by either side was one of the main hoops fans in the building -- Barack Obama. His was the studied impassivity of (nearly all!) members of the Supreme Court during a State of the Union address. Cheer for a Hoyas steal/dunk? North Carolina is an important state. Cheer when the Blue Devils rally? Become an oddball/pariah in a hostile crowd. So, Buddha-like he sat, as perfectly illustrated above. Joe Biden moved around a little more but also didn't cheer. Someone I assume to be his son Beau, who will not be the next senator from Delaware, is next to him -- and cheering.
Who is that guy on the other side of Obama? Whom he spent much of the game chatting with? The print WaPo has a picture of him but doesn't give a name. The online slide show says he is Phil Schiliro, White House legislative aide. And I assume a hoops fan too.
UPDATE: I am informed that the cheering, Biden-looking person next to Joe Biden was not Beau but his other son, Hunter. Who is a Hoya alum. This makes better sense now! Beau Biden's school associations are with U Penn and (gasp) Syracuse, neither of which produces big Georgetown-loyalists.