Question: once upon a time in hollywood what to know before seeing?
Answer: WATCH. Rosemary's Baby. Horror: Mia Farrow in Rosemary's Baby. ... 
KNOW. Batman. The original: Adam West as Batman. ... 
WATCH. Easy Rider. Fork in the road: Peter Fonda and Dennis Hopper in 1969's Easy Rider. ... 
WATCH. The Wrecking Crew.