While I was fixing up the [Glossary](http://johnaugust.com/site/glossary) yesterday, I added two new requested definitions:
McGUFFIN
Often associated with Hitchcock, [PageWise](http://sc.essortment.com/alfredhitchcoc_rvhd.htm) has a good definition: A device or plot element that catches the viewer’s attention or drives the plot. It is generally something that every character is concerned with. The McGuffin is essentially something that the entire story is built around and yet has no real relevance. That is, it’s what the movie says it’s about, even though it really isn’t. In the first Charlie’s Angels, the McGuffin was stolen voice-identification software; in the second, it was a Federal Witness Protection List. In both cases, the villain’s real motivation was greed and revenge. In early drafts of Full Throttle, the Angels had to retrieve a glowing vial labelled “McGuffin Industries.”
SET-PIECE
A scene or sequence with escalated stakes and production values, as appropriate to the genre. For instance, in an action film, a set-piece might be a helicopter chase amid skyscrapers. In a musical, a set-piece might be a roller-blade dance number. In a high-concept comedy, a set piece might find the claustrophobic hero on an increasingly crowded bus, until he can’t take it anymore. Done right, set-pieces are moments you remember weeks after seeing a movie.
At the risk of introducing another screenwriting metaphor, I’ll say that structure is like your skeleton. It’s the framework on which you hang the meat of your story. If someone’s bones are in the wrong place, odds are he’ll have a hard time moving, and it won’t be comfortable. It’s the same with a screenplay. If the pieces aren’t put together right, the story won’t work as well as it could.
Human skeletons are pretty consistent, but you also have gazelles and giraffes, cockroaches and hummingbirds, each with a different structure, but all equally valid designs. The standard dogma about screenplay structure focuses on hitting certain moments at certain page numbers. But in my experience, these measurements hold true for [Chinatown](http://imdb.com/title/tt0071315/) and nothing I’ve actually written.
One frustrating part of discussing scripts on the internet is that the formatting is always wrong. Changing the typeface to monospace (such as Courier or Monaco) helps a little, but the indentations are still wonky.