GXine on Second Screen like a movie is a Nautilus script that allows you to watch a movie on a second monitor, if you have a dual-monitor configuration.
Copy the files into the hidden directory
To execute the script, click on a video-file and select in scripts the new script. Then you have to wait some seconds. Enjoy it!
If there is a fault by playing the video, you shuold install multimedia codecs!
Tested with nvidia-twinview on Ubuntu 8.10.