Let me try this on you before I take it to Hollywood. See what you think and no blabbing to Warner Bros!
The world is going to hell in a handcart - too many people, not enough resources, rampant 
pollution, global warming, people eating endangered animals out of house and home, people eating endangered animals, period. (Did I mention it's set in the present day?) Something Must Be Done.
Then a young, brilliant scientist, who looks
remarkably like Orlando Bloom, has an ingenious idea. He does some preparatory work, then takes his proposal to a team of venture capitalists and they are, for a change, wildly enthusiastic.
Here's his pitch:
Everyone knows that computers are doubling in capacity every 18 months. At some time in the not-too-distant future, they will have the equivalent processing power of a human brain. Well, that time has now arrived!
<commercial>
You too can live forever!
Are you feeling old, decrepit, dying from some terrible disease or simply tired of living in this godforsaken hell-hole? (Earth, you dummy! Do try to keep up!)
Sign up now and have your thoughts, your memories, even your feelings stored in cyberspace - for all of eternity!
Free from all shortcomings of the flesh, your mind can race around the world at the speed of light itself!
Give yourself virtual organs that you could never have in "real life". You want a lizard tail? You've got it! Green skin? No problem! Gills? 
Sure, why not?
All we need to do is scan the contents of your brain and upload your personality into our mainframe - for free*!
*Small print: The scanning process is irreversible and destructive. Clients' brains become the property of New Life, Inc.
</commercial>
Some customers have already joined up. Their worn-out bodies have been recycled as bio-diesel, but their minds are out there on the super-information highway. Friends and families are able to "talk" with their loved ones simply by logging into chat-rooms and typing away. Two-way webcam links are just around the corner, after a few teething troubles have been ironed out.
Like the fact that the whole thing is a scam.
The "uploaded" are in fact nothing but sophisticated chat-bots, set up to tempt the unwary into putting themselves into the clutches of a ruthless cabal, an unholy alliance of mad scientists and businessmen, intent on subjecting as many humans as possible to voluntary euthanasia.
Massive worldwide advertising campaigns show willing victims queuing up to enter the conversion booths, where their brains are extracted, "scanned" and uploaded onto supercomputers (dressed-up PSPs). The corpses are shown being fed into recycling plants (but actually used as landfill), while the brains are secretly puréed and marketed as tasty, nutritious soup. Mmmm, rich in omega-three fatty acids!
It all starts to go horribly wrong when the consumers who drink the soup start turning into brain-eating zombies and run amok...
I'll probly have to throw in a few aliens and that to keep the special effects bods happy, obv. But I think my totally original and not at all stolen from anyone else idea is a winner.
Innit?
Update: WTF am I thinking? I need a title, guys! Help! I'll cut you in on the profits...
Buy it! Now!
