Steve Coll, writing at the New York Review of Books (link):
More importantly, Zero Dark Thirty ignores what the record shows about how regulated, lawyerly, and bureaucratized—how banal—torture apparently became at some of the CIA black sites. A partially declassified report prepared by the CIA’s former inspector general, John Helgerson, indicates that physicians from the CIA’s Office of Medical Services attended interrogation sessions and took prisoners’ vital signs to assure they were healthy enough for the abuse to continue. Agency officers typed out numbingly detailed cables and memos about the enhanced interrogation sessions, as the available outline of the Senate Intelligence Committee’s classified investigation makes clear. Videotapes were recorded and logged. This CIA office routine might have been more shocking on screen than the clichéd physical abuse of prisoners that the filmmakers prefer.