"The Room" has become an interactive cult sensation in the mold of "The Rocky Horror Picture Show." Fans arrive to screenings armed with plastic spoons to hurl at the screen whenever a framed photo of plastic cutlery appears in the film, which it frequently and mysteriously does. They shout choice bits of dialog in unison, loudly insult the movie's many plot holes and inconsistencies, and carry bouquets in tribute to a well-loved flower shop scene. Many of them will attend the Coolidge Corner Theater's 24th screening of "The Room" on June 18.