Real 3D Photoshop Tutorial: 3D Light Beams

Very, very cool technique by Corey Barker, Executive Producer of PlanetPhotoshop.com. Using the New Volume From Layers command you create 3D visible light beams.

Doing volumetric light beams in 3D can really be time consuming. This is a great real time solution.

Illustrator Tutorial: Texture Techniques

Although this tutorial is primarily Illustrator based, it brings up some good techniques which can be converted into repeating texture patterns for 3D texturing.