(CINEMATIC DISASTER FOR A GOOD CAUSE) One horrible tragedy deserves another—that's why tonight at the Triple Door I'm hosting a one-night-only encore screening of Showgirls, Paul Verhoeven's accidentally hilarious cinematic disaster, with live annotation by yours truly and profits going to the Red Cross for victims of Hurricane Katrina. (The Triple Door, 216 Union St, 838-4333. Doors at 6 pm, show at 7:30 pm, $12 adv/$15 DOS, 18+.) DAVID SCHMADER