My first real attempt at fully textured 3D art.  Included in the zip are two .blend files (for Blender 2.5).  One of these files is the original version of the barrel with procedurally-generated textures.  The second one is a glsl version (presumably suitable for the blender game engine) where I exported the textures as images from the first one as images.  The glsl version looks pretty much the same as the render, including the normal and specular maps (paint peeling and bubbling, rust, etc).  Embedded rexture files are 1024x1024.

If you use this, you must link to opengameart.org in your attribution.