Ben Mauro has posted a ZBrush video tutorial, focusing on the development of his Yukon Pit Crew project.
Timelapse ZBrush Sculpt
Jose Alves da Silva has posted a timelapse of him sculpting a skull in ZBrush.
ZScripting with ZBrush - Eat 3D Tutorial
Eat 3D have released a video tutorial on ZScripting with ZBrush.
ZBrush Professional Tips and Techniques
Learn to work effectively and creatively with all versions of ZBrush in this new book from Pixologic.