Learn how to quickly knock out some crazy cheap but effecitve lip sync in no time with this method. This isn't good for highly realistic mouths, but it works great with cartoon mouths that are more abstract.
Box Head character is by Jason Osipa from his outstanding animation/modeling/rigging book on faces, "Stop Staring."
Dialogue in clip is from Mission Impossible (1996)
0:00:00 Key Concepts
0:04:30 Basic Approach
0:05:36 Roughing in the Up/Down
0:11:01 Refining the Up/Down
0:15:09 Adjusting Keying Settings
0:18:41 Sound Concepts
0:22:43 Roughing in Wide/Narrow
0:28:14 Finish Passes