Ben Mauro has released a free 3D environment design tutorial using ZBrush, Keyshot and Photoshop.
David Richardson - Mech ZBrush Tutorial
David Richardson has created a multiple-part tutorial for modeling a mech in ZBrush.
Making of Villa Bonafe - Living Room
Evermotion present a modeling and post production tutorial by ADC Visualizations on the making of their Villa Bonafe image.