I've just finished writing an article that explains how
to build a movie screen in Java 3D. The movie is played
using the Java Media Framework (JMF).
The article and the code can be found at the
"Killer Game Programming in Java" website: http://fivedots.coe.psu.ac.th/~ad/jg/Hype Alert...
Incidentally, the "Killer Game Programming in Java" book
from O'Reilly is due out any day now. You can find details
at the website or from O'Reilly: http://www.oreilly.com/catalog/killergame/
There's over 15 chapters on Java 3D.