Play a QuickTime movie with Jitter
The jit.qt.movie object can open (read) a .mov file (or really any media file that QuickTime is capable of dealing with) and start playing it, loading its visual content into its internal Jitter matrix. But that matrix is only made visible when you send it a bang, which causes it to send out a jit_matrix message to jit.window telling it where in memory to look to get the data to be displayed.