Have you ever adapted a piece of writing? Adaptions are somewhat common pieces of literature, even more common in cinema. There are three main types of adaptions: a change in audience, a change in length, and adaptions to films, television, plays, etc.
The first type is represented by the author of Twilight, Stephanie Meyer. She began writing an adaption of Twilight from Edward's point-of-view, shifting the audience more toward males, although the book has yet to be released in full and may never be finished due to an illegal leak of the first twelve chapters.
The first two types work together in adaptions of classic works. The adaptions are intended for younger readers and in doing so are condensed highly, cutting their word-count substantially. Most examples of a change in length fall into this hybrid.
The final adaption type is wide-spread. Pretty much any time you watch a movie with a book written previously the movie will be an adaption. Things are changed, sometimes vastly. Books can also be adapted into television shows, plays, musicals, and other forms of cinema.
Adaptions are great works of literature and cinema. What's your favorite adaption?