“Woodshock” (*1/2 out of four) was a maddeningly pretentious and boring drama about a young woman (Kirsten Dunst) dealing with her mother’s illness and alienation from her partner who gradually loses herself in her fractured mental state and the altering effects of some potent marijuana she begins using and abusing. Genuinely strange movie has long pauses and stretches of Dunst walking around her house and no dialogue; result is arty, stilted, and dull. Second half is particularly tough to endure. Dunst tries her best in an almost unplayable role.