Upon exiting the West 4th Street subway in New York City, just across from the famous “Cage” street basketball court, you will find the IFC Center. The theater features independent and foreign films. But if you don’t feel like buying a ticket, there is a secret way to get a peek inside, and even watch a film, right from the sidewalk. When facing the entrance, look for a small metal circle about five feet from the ground. On the circle, you will notice two more, eye-width apart. No other signage…