The screams coming from behind the Coolidge Corner Theatre on a recent Saturday night weren’t the blood-curdling kind. They were more like the raucous howls that greet rock stars, which is pretty much what it looked like when Tommy Wiseau, the writer, director, producer, and star of “The Room,’’ materialized to press the flesh before a midnight screening of his film. “Tommy! Tommy! Tommy!’’ chanted the throngs, waving their cellphones and jockeying for a chance to take a picture with the man responsible for what many believe is the worst movie ever made.







