Brushed metal effects are, without a shadow of a doubt, extremely popular amongst all Photoshop users. The reasons behind this are simple- no other single effect is as useful or as simple to create.
In the world of 2D/3D design, rock texture creation is often seen as a particularly onerous task. With some Photoshop wizardry at our disposal, we can reproduce extremely detailed rock textures with nothing more than a few standard filters.