James Busby demonstrates nondestructive image flattening and reflection removal in Photoshop.
Gnomon - Design Techniques for 3D Concept Art
The Gnomon Workshop present Design Techniques for 3D Concept Art, a DVD tutorial by Gavriil Klimov.
Ben Mauro - ZBrush for Environments
Ben Mauro has released a free 3D environment design tutorial using ZBrush, Keyshot and Photoshop.
Natural Media Toolkit for Photoshop
Nate Reeves has created the Natural Media Toolkit for Photoshop, providing versatile new tools in a compact palette.