thurs. 2  Rainman — Barry Levinson’s 1988 movie starring Dustin Hoffman, Tom Cruise and Gerald R. Molen. Doors open at 6:15 p.m. with a pre-show Wurlitzer theater organ performance by a house organist at 6:30 p.m. The R-rated movie starts at 7 p.m. Thursday, Sept. 2 at the Riviera Theatre and Performance Center, 67 Webster St., North Tonawanda; $. 692-2413, www.rivieratheatre.org sat. 4 & sun. 5  Harmony Korine's Trash Humpers — From the maker of “Julien Donkey-Boy,” “G ummo” and “Corporate Ghost” comes “Trash Humpers” which follows a small gang of sinister elderly peeping toms through the shadows of a nightmarishly familiar suburban landscape in Tennessee. Their shocking and sociopathic behavior makes for unbearabl y compelling viewing that scorches itself onto the mind’s eye. Screening 9 p.m. Saturday, Sept. 4 and Sunday, Sept. 5 at Squeaky Wheel, 712 Main St., Buffalo; $. 884-7172 wed. 8  Jaws — Steven Spielberg’s 1975 summer movie starring Roy Scheider, Richard Dreyfuss, Robert Shaw and Lorraine Gary. Go see the three-time Oscar Award-winning film that kept everyone out of the ocean, 9 p.m. Wednesday, Sept 8 at Bacchus Wine Bar & Restaurant, 54 W. Chippewa St., Buffalo; Free - Reservations required. 854-9463, www.ultimaterestaurants.com