David Richardson has created a multiple-part tutorial for modeling a mech in ZBrush.
Learn all about nanosculptures, as created by Jonty Hurwitz through the use of ZBrush.
Mariano Steiner - Sketch Reel
Mariano Steiner has posted a reel of his recent ZBrush sculpts.
Fibermesh Hair Tutorial
Yuri Alexander has posted a tutorial on creating and rendering Fibermesh hair.