Jesse Eisenberg

Fear, self-loathing and Facebook

Between scenes on "The Social Network," which shot for three days last November at Johns Hopkins sites doubling for Harvard, Jesse Eisenberg sat on a folding chair at an empty folding table across from the Baltimore Museum of Art, dressed in a grey Gap hoodie, reading Mark Haddon's "The Curious Incident of the Dog in the Night-Time."

Although "Adventureland" and "Zombieland" had won him acclaim and a bit of fame, passers-by might have thought Eisenberg was a Hopkins undergraduate killing time on a slow Tuesday with a quality...