Tired of the ho-hum sterility of the average multiplex theater? But bummed about watching another video alone at home? That's where Thursday nights at the Loft come to the rescue. Concealed above the hubbub of the music store below, the second-story theater is a hodgepodge of sofas and easy chairs that provides a homey milieu -- with plenty of company. Each week at 8 p.m., the theater presents "the best (and worst) in cult and horror movies," its fliers brag. Judge for yourself; over the past few months, the Loft has run films such as Ichi, The Killer; The Return of the Living Dead; Silent Night, Deadly Night; Black Christmas; and New Year's Evil. Best of all, it's free. Remember to bring your own popcorn and maybe even somebody to hold hands with.