Advanced Photoshop Layer Masking
Make non-destructable changes to the base texture by adding wear and decals, etc.
Photoshop Tiling Texture Creation
Old-school, but trustworthy, way of creating tiling textures from a photograph source.
High Quality Ambient Occlusion in UDK
Change the default ambient occlusion settings and view them real-time in the viewport
File Texture Manager Basic Tutorial
Repath missing textures in Maya 2011 to a new directory. Fixes black shaders in hypsershade.
UV Checker Texture Map
Useful map for checking texel density and stretching of uv unwrap. (Right-click and "Save Image As")