How do you play .iso movie files on a mac?

There are severnal ways that you can play DVD movies saved as .ISO files on Mac, especially on the on the newest Mac OS Snow Leopard. Use Apple DVD Player or other third party program, such as VLC, Macgo Blu-ray Player etc. Just open the VLC media player and drag the ISO file to the VLC menu. Double click to start playing. An external Blu-ray drive is also needed if you wanna play a Blu-ray Disc.