Relocated to ACT and feted by the former mayor, the once-grungy 14/48 theater festival is now a legitimate Seattle institution. But no matter the locale or civic plaudits, the main point of 14/48 will forever be barely controlled chaos, as a gaggle of Seattle's favorite actors, directors, playwrights, musicians, and designers are forced to write, direct, rehearse, design, produce, and perform 14 new short plays in 48 hours. Tonight brings the seven plays created in the first 24 hours to the stage, where some will soar, some will flop, and some will quiver mysteriously. At least one will make you love theater all over again. (ACT, 700 Union St, 292-7676. 8 and 10:30 pm, $20.)