The Editing Room

A website that features film scripts of movies that are rewritten in a mocking manner for comedic effect. It was founded by Rod Hilton in 1998, and is still going strong to this day.

The Editing Room provides examples of the following tropes:

The Abridged Series: The scripts are essentially an abridged series for movies.
All There in the Manual: Parodied in the script for The Matrix Reloaded, where the Architect does an Enforced Plug to Keanu Reeves by quoting real-life advertising for Matrix products:

Keanu Reeves: What was the Osiris? And who was that kid in Zion who kept pestering me?
Architect: You will find the answers to these questions by purchasing The Animatrix, a collection of nine animated shorts from some of Anime's top directors.
Keanu Reeves: Alright. Well, what was that crap Glora said about vampires and werewolves? And how did Jada Pinkett Smith get to Laurence Fishburne during the car chase? And what the hell happened during the power plant takeover climax that-wasn't?
Architect: You will find the answers to those questions by purchasing the Enter the Matrix game, available for Windows, Playstation2, Xbox, and Gamecube. Enter the Matrix features awesome gunplay and spectacular martial arts that bend the rules of the Matrix. This game isn’t just set in the Matrix universe–it’s an integral part of the experience, with a story that weaves in and out of The Matrix Reloaded. Enter the Matrix is the story behind the story.

Accentuate the Negative: He can be mocking even of films that he really did like.
Actor Allusion: Actors will make fun of each other by referencing each other's past roles.
Artistic License Physics: In-work. Fast Five plays so fast and loose with the laws of physics that eventually, the Laws of Physics walk off the set.
Bat Deduction: How Sherlock Holmes is depicted in Sherlock Holmes.
Bunny Ears Lawyer: The author has demonstrated a lot of in depth knowledge of various religions and cultures.
Cluster F-Bomb: Samuel L. Jackson, Chloe Grace Moretz (in the Kick-Ass script), and Bradley Cooper (in The Hangover script)'s dialogue are peppered with curse words.
Deadpan Snarker
Did Not Do the Research: Sometimes, Hilton gets the facts confused or misinterprets a plot device, and thus ends up misrepresents the films.
Downer Ending: Lampshaded in the Winter's Bone script:

JOHN HAWKES: Yeah, this ending is getting a little too happy. This is an Indie movie, your options are bittersweet or fucking miserable.

Genre Savvy: The cast in the scripts tend to be aware of the genre they're in and will state the role they fill in the movie.
Insane Troll Logic: How Robert Langdon's methods of finding each element location is depicted in Angels & Demons. Subverted for the water element:

AYELET ZURER: Wait let me try one. Okay, so this guy was chained up… chains are often used for construction work… the fourth cardinal is at a construction site!
TOM HANKS: What? Don’t be stupid. The fourth element is water, so he’s in a fountain.

Mineral MacGuffin: Called "Macguffium" in the Avatar script and "Plotresolvium" in Chronicle.
No Fourth Wall: The script is aware that the work is fiction, with actors dissing the movie they're in, directors arguing with the actors, and even the audience is given lines.
Running Gag: In the Winter's Bone script, every setting is described as bleak, up to the point that one scene is described as "INT. BLEAK SHERIFF STATION, BLEAKITY BLEAK BLEAK"
- Samuel L. Jackson is listed as SAMUEL L MOTHERFUCKING JACKSON in every script he appears in.
Script Fic: The screenplays are this combined with The Abridged Series.
Serial Numbers Filed Off: In-work. The original scene descriptions for The Hangover are used in the sequel, but with words scratched out and replaced with new ones.
Take That, Audience!: Combined with Take That Me in the Kick Ass script. One character makes fun of Ron Paul supporters, then later makes a joke the only thing stupider than abandoning the Deconstructive Parody premise of the story was making fun of Ron Paul supporters on a website that allows comments.
Trope Name: Stock characters in the script will bluntly state their role in the movie.