Jesse Eisenberg as Mark Zuckerberg, plotting Internet dominance with Justin Timberlake as Sean Parker in "The Social Network." After emerging from a screening last week of the highly anticipated "The Social Network" -- the dramatization of the evolution of Facebook that, for the record, is every bit as compelling as all the buzz suggests -- I overheard two women engaged in animated chatter. "Such a jerk," I heard one of them tell the other, clearly referring to Mark Zuckerberg, the Facebook co-founder who, as portrayed by Jesse Eisenberg in the movie, comes across as an opportunistic, speed-talking, insecure little weasel....