Billy Argel blends grunge and western styles in this free font
There are fonts you use every day, then there are those priceless ones you only bust out for a special occasion. Outlaw is one of those fonts you may only use once, but you’ll be happy you have it when you do. Outlaw features a fantastic grunge appearance on a western-style font. The author of the font, Billy Argel, is particularly good at creating grunge fonts – so be sure to check out his other fonts available on DaFont.
Zen Textures offers a plethora of neatly categorized textures, free for commercial use
Zen Textures offers a plethora of free textures for downloading and use in your designs. Among the categories of textures are: rocks, stone, bokeh, rust, wood, cardboard, and concrete.
Yet another free texture site worthy of bookmarking!
Worn Lines is a fantastic grunge stripe set of high-resolution Photoshop brushes that makes adding a little flair to your background images simple.
A great set of grungy lined Photoshop brushes
Worn Lines, a 20MB download, includes ten 2,500 x 2,500 pixel brushes, and is available from QBrushes. Be sure to check out the multitude of great brushes available while you’re there.
Textures are the backbone of so many designs, they can really add flair to your layout, and save you hours of time looking for a substitute design, or shooting your own photos. Lost & Taken has so many great textures available that it would take hours to list them all.
Lost & Taken is one of my favorite texture sites
Re-Stained Paper is just one of many awesome texture packs available for download. The Re-Stained Paper textures measure approximately 2,200 x 3,200 pixels in size, and are free to use for personal or commercial work.
This collection of six brushes adds a little decay to your image
I came across this fantastic set of brushes at BlendFu and immediately downloaded it. Decay features six large and highly detailed brushes to add a little rust, cracking and decay to your background image.
UrbanDirty offers a truck-load of dirty, grungy textures
There are plenty of places on the Web to find great high-resolution textures – particularly grungy ones. But few sites offer as many in one place as UrbanDirty. Over 700 spectacular, grungy, dirty, absolutely sick high-res textures – all free to use for your design projects.
Caleb Kimbrough has released his latest set of free high-resolution textures. Five beautiful grungy looking brick walls are available for download here.
Bricks by Caleb Kimbrough at Flickr
Each image is of very high quality, and measures in at 3888 x 2592 pixels. Don’t forget to honor the Creative Commons license and attribute the images to the author if you use them.
Caleb Kimbrough's grunge frame texture collection
Be sure to check out Caleb’s Photostream for more great textures.
SixRevisions has a really nice set of grungy wall textures you can use in your personal or commercial design work free of charge. You can download each texture image individually from Flickr.
With grunge/textured designs being popular, SixRevisions thought it would be worthwhile to provide some free textures that you can use in your designs. 
The Rough Textures set consists of 15 free, high resolution rough textures (2,500px x 1,950px dimensions – 8.5 x 6.5 at 300dpi) taken from rock and stone formations on a beautiful Sunday afternoon.