The Movies is the latest massively ambitious simulation from Peter Molyneux (maker of classics such as Populous and Black & White) and can be seen as logical progression from his Theme Park/Hospital series of games.
Unlike these games though the actual micro management of your studio--building lots, picking stars and handling unions--isn't necessarily the most interesting part of the game, engrossing though it can be. Instead actually making your movies becomes the most fun part, for although you can just specify a genre, cast and budget you can also paste together films yourself, scene by scene.
For each scene you can choose the actors, sets, costumes and script and then alter the mood and flow of the scene through a number of slider bars. This allows you to create a completely unique movie of your own, which you can even export from the game and show to other people. You probably won't be worrying Steven Spielberg, but other lesser directors--they better watch out! -- David Jenkins