Sounds like something from World of Warcraft. Has to be good.
Source Tony Kinard
Here's a tile-able wood background image for use in web design.
Source V. Hartikainen
And some more testing, this time with Seamless Studio. It’s Robots FFS!
Source Seamless Studio
Colour version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
A beautiful dark padded pattern, like an old classic sofa.
Source Chris Baldie
First pattern tailor-made for Retina, with many more to come. All the old ones are upscaled, in case you want to re-download.
Source Atle Mo
Looks like an old rug or a computer chip.
Source Patutin Sergey
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
From a drawing in 'Kingsdene', Maria Fetherstonehaugh, 1878.
Source Firkin
Prismatic Groovy Concentric Background No Black
Source GDJ
Submitted as a black pattern, I made it light and a few steps more subtle.
Source Andy
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Black brick wall pattern. Brick your site up!
Source Alex Parker
Tile available in Inkscape using shift-alt-i on the selected rectangle
Source Firkin
A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
Prismatic Groovy Concentric Background 3 No Black
Source GDJ