I get what happened, but MAJOR issue
SPOILERS and MIND BLOWING OBSERVATIONS
Before I start, I'm curious to know this - did anybody else get super frustrated that Jake never watered the plants? I kept yelling "water the plants" but I don't think he heard me.
Why did "Sam" kill Gloria? What was the motive? And then why did he take money from her and then hit her? Was that something that really happened, or was that part of the set-up?
And what about the guy who Gloria asked to meet at the motel who apparently bailed out on her, wouldn't that guy have some information? And why did Gloria throw those panties away? I guess it could have made sense if she was just wearing some fudge stained Hanes from her college years, but they appeared to be in pristine condition.
But HERE IS THE MAJOR ISSUE: Jake talks to Sam on the phone while spying on the house, but it is later revealed that is was Sam himself who Jake was watching, so he couldn't have been on the phone at the same time!
I know, I know -- "it's just a movie." But these are questions worthy of an answer. If you have answers, please enlighten me.
The aforementioned issues aside, I did like the film. Dug the Rear Window/Vertigo thing. Always nice to see movies about movies. I wonder if naming the protagonist Jake was a Chinatown reference. And I don't know if you guys are totally into Chinatown like myself, but in the beginning an actress impersonating the real "Mrs. Mulwray" asks for help from Jake Gittes - a plot device which Body Double seems to have borrowed as well.