There are many great texture collections on the web, but you can never have too much variety. I shoot a lot of my own when possible, and now share them here under a Creative Commons 0 license. This means you can use the images on this page as part of your work, but you cannot distribute them as your own. You may provide credit to Aaron Pate, but it is not required.
Not sure what textures are for? I use these constantly in Adobe Photoshop, After Effects, and Premiere, to enhance graphic design and visual effects projects. Having a broad selection of textures that you can use legally is a major asset for independent filmmakers and designers. Check out my post about textures for more information.
Concrete / Brick / Stone Textures