Pixar has released one of their texture libraries under a Creative Commons license.

Created in 1993 this texture library includes 128 repeating textures, now available for free. 
Pixar One Twenty Eight includes:
  • 15 beautiful bricks
  • 13 fine fabrics
  • 2 fences
  • 3 floors
  • 15 ground covers
  • 8 marvelous metals
  • 8 terrific roofs
  • 9 sidings
  • 2 animal skins
  • 12 elegant stones
  • 10 walls
  • 28 exotic wood
  • And more ... snails, paper clips, & iridescent ribbon
Updated for 2015 
The texture library has been upgraded and now includes bump and normal maps. The resolution has also been increased to 1024x1024. While created in 1993, this library still has many potential uses. Enjoy.