You’re In The Movies uses the Live Vision Camera accessory for the Xbox 360 console to capture movies of you and your friends. You can read what our reviewer, Grass-Hopper, has to say about it in the paper (PDF or text).
As you can see from the movie we’ve posted up (the lead actor’s Grass-hopper’s brother!), the game’s “green screen” effect doesn’t work quite well if your interiors are dimly-lit. This results in some patchy results. So if you’d like it to work well, Grass-Hopper recommends putting up a big, white screen (mahjong paper backdrop, anyone?) with even and bright lighting.