Paul Schrader is officially a reformed Christopher Nolan head. The “Master Gardener” and “Card Counter” director took to his personal Facebook, where he regularly posts candid one-offs musing on current cinema and politics, to share his very high praise for Nolan’s “Oppenheimer.” “OPPENHEIMER. The best, most important film of this century. If you see one film in cinemas this year it should be Oppenheimer.