Jesse Eisenberg -- Confused for Mark Zuckerberg on National TV

It's been almost two years since "The Social Network" came out, but Jesse Eisenberg is somehow still being mistaken for Facebook founder Mark Zuckerberg ... even at the Olympics!

During the telecast of the men's basketball gold medal game, the camera cut to Eisenberg in the crowd. The announcer, Bob Fitzgerald, tried to make a joke of it, saying, "I know I'm gonna put that picture on Facebook. We've got every executive of note, it seems worldwide, attending these Games."