Chafing at the then-widespread complaints that he was just a misogynistic Hitchcock knock-off obsessed with graphic violence and nudity, De Palma concocted this hilarious mash-up of “Rear Window” and “Vertigo” that just so happens to be chock full of graphic violence and nudity.
At first, he seems to be doing Stewart in "Rear Window".
In sequences inspired by " Rear Window ," he begins to follow the woman (Deborah Shelton), but he keeps his distance because he's caught in the same dilemma as James Stewart was in the Hitchcock picture: He is, after all, technically a Peeping Tom, and he wouldn't know the woman was in danger if he hadn't been breaking the law.
Just as De Palma's excellent Dressed to Kill was an homage-or-rip-off-take-your-pick of Hitchcock's Psycho, Body Double uses both The Master's Vertigo and Rear Window as its twin starting points and then wanders off in its own delirious direction.
This time out, he most explicitly references a trio of Hitch�s films (Vertigo, Rear Window, and Psycho) that he had previously paid extensive tribute to with better end results (most notably in Obsession, Sisters, Dressed to Kill).
Body Double is another sexed-up Hitchcockian thriller from Brian De Palma that really took a beating from most critics when it opened in the fall of 1984 -- I guess audiences (and critics) in '84 just weren't ready for a movie that borrowed from classic Hitchcock thrillers (Vertigo and Rear Window in particular) containing porn stars and driller killers.