that's sanders theatre, and i'm afraid reservations for it have to be made during the preceding academic year.

fwiw the link for assorted spaces you can book at harvard is here:
http://www.travel.harvard.edu/cgi-bin/travel/meeting_planning/on_campus_facility_rentals.php

i'd be happy to donate my faculty privileges if they'd be any use. otoh i kind of think rich, as an mit weenie, would sneer at our little liberal-arts school....