Tagline: He got a lot more than he bargained for.
Poster: LOG laying on top of a brick wall and dozens of hands reaching for him under the wall, with a red background and the title "Land of Gold Is Great And Everybody Wants Him" hanging on a sign above him.
Oh, and it's rated PG-13 for some adult content and crude humor.
Tre And His Friends vs. Insane Night Guards, Shopping Cart Accidents, Teachers And Bullies That Want Their Heads On Silver Plates, Love, Bounty Hunters, And Dozens Of Other Occurrences
edited 21st Nov '10 5:44:42 PM by Tre
oh, that's why I need this binary mind // ⌘It's 10:00 PM. Do you know where your children are?
Edit: Fuck, title... Uh...Rocket Redglare Vs. Hitler, Part: II: Rise of the Ghostapo
edited 21st Nov '10 5:50:42 PM by SeanMurrayI
Is it ever gonna crack?
Poster: Think along the lines of Harry Potter and the Sorcerer's Stone, but replace Harry with a hairy old coot and all of the other characters as they'd look 40 years older.
The Revenge of Todd Levesque: There Will Be Blood.
edited 21st Nov '10 7:24:35 PM by Tre
oh, that's why I need this binary mind // ⌘He's back... for more blood.
March of the Land-Squid: An Observation of Mother Nature's Moste Majestik Abominatione.
edited 21st Nov '10 7:49:58 PM by MsieurLapin
No one was prepared for the truth.
But soft! What rock through yonder window breaks? It is a brick! And Juliet is out cold.The conspiracy begins... and the Age of Adz ends.
Poster: "the situation" in blue Poor Richard font, sitting atop a search bar with the tagline typed into it and a cursor over the "I'm Feeling Lucky?" button so that it only says "Feeling Lucky?"
Diary Of A Wimpy Kid Abridged, starring Lyle Terry
edited 22nd Nov '10 6:36:53 AM by Tre
oh, that's why I need this binary mind // ⌘It'll take more than a hero. It'll take S.E.V.E.N.
Project: Alpha
edited 19th Dec '10 6:38:57 PM by BlackWolfe
But soft! What rock through yonder window breaks? It is a brick! And Juliet is out cold.They trained her to be the ultimate weapon. They just didn't expect her to maintain her free will.
Embroiled in slave rebellion, I escaped crucifixion simply by declaring 'I am Vito', everyone else apparently being called 'Spartacus'.The human race is going to be saying "me-OW" when they come...
—
edited 19th Dec '10 8:34:57 PM by Tre
oh, that's why I need this binary mind // ⌘We'll name it before we release it
edited 23rd Dec '10 9:40:49 PM by Noaqiyeum
ERROR: The current state of the world is unacceptable. Save anyway? YES/NO

Simple enough idea. Person A provides a title. Person B gives that title a snappy tagline for the cover. For Bonus Points, they can describe the poster or cover as well if they want. Then, they provide a new title for the next person to give the marketing makeover.
Obligatory Example
Title: The Trouble With Tropers
Tagline: When she found the forums, she thought she'd found a place with like-minded people. She didn't know how right she was.
Let's get started, shall we?
Title: The Devil's Nectar
But soft! What rock through yonder window breaks? It is a brick! And Juliet is out cold.