This extension will play movies on play.google.com/movies in the full window.
When you watch movies or TV on Google Play Movies, the movie player uses only a small part of the available space. This extension will make the movie player take up all available space on the page!!!
A lot of us don't like to watch movies in "Fullscreen Mode", because it hijacks one of your monitors in a weird way. This extension allows you to watch those same movies in, what I call, "Full Window Mode".