The New York Film Festival, swinging away from its artsy choices of the last couple of years, has selected a mainstream movie for its opening night on September 24. The pick is “The Social Network,” from the usually interesting director David Fincher (“Fight Club,” “Zodiac”)  who was also the culprit behind “Panic Room.” I’m having a hard time picturing how a movie about Facebook founder Mark Zuckerberg (written by Aaron Sorkin) is going to be as interesting as movies about underground pugilism networks or the hunt for a serial killer. Also, though I have enjoyed star JesseEisenberg’s work, I’m not sure he can carry a big motion picture. He’s better suited to be the sort of sidekick he was in “Zombieland.” Says the tagline for the film, “You don’t get to 500 million friends without making a few enemies.” Yes, but inspiring a few dweeb spats doesn’t necessarily make for a great movie.