Company man: Ben Affleck as agent Tony Mendez in Argo. What strange suburb of Boston is this? Well, we're no longer in Dorchester, Southie or Charlestown for the latest film from Ben Affleck. Instead, it's the turbulent streets of...Southern California. Actually, it's sites in the San Fernando Valley, the Los Angeles neighborhood of Hancock Park and a disused airport terminal in Ontario, California which are made to resemble the teeming streets of Tehran at the start of what Americans know as The Iran Hostage Crisis. Argo , Mr. Affleck's third film as a director concerns itself with a generally forgotten episode of that 444-day crisis called "The Canadian Caper." Six Americans managed to escape the frightening storming and takeover of the U.S. Embassy by Islamist students and militants and find shelter in the residence of the Canadian ambassador, among other hiding places. C.I.A. agent Tony Mendez (Affleck), an expert in "exfiltrating...