How do I play DVDs fullscreen on an external monitor in Lion? MacbookPro6,2 running Mac OS Lion 10.7.2 attempting to run a DVD fullscreen on an external monitor.  My laptop display is primary, but I would like the DVD to run fullscreen on the External (a lovely 23"-er).

I'm fine with using VLC if that's necessary, but I prefer to not make the external monitor my primary display. #ihateyoumissioncontrol
You need to run VLC.

In VLC, go to the Video menu and the Fullscreen Video Device menu and choose which screen you want to use for fullscreen video playback.