OPENING FRIDAY 9/2

Bellflower (R) Two friends build weapons of mass destruction, hoping to clear the way for their imaginary gang.

A Good Old-Fashioned Orgy (R) A group of 30-year-olds, old high school friends, try to throw a wild end-of-summer party.

Magic Trip (R) A portrait of Ken Kesey and his Merry Pranksters' road trip across the United States in the psychedelic '60s.

Shark Night 3D (PG-13) A weekend at a vacation house on the Gulf Coast turns into a shark-infested nightmare.