This is sort of fresh, but still feels a bit old school.
Source Martuchox
One of the few full-color patterns here, but this one was just too good to pass up.
Source Alexey Usoltsev
The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
A repeating background with wood/straw like texture.
Source V. Hartikainen
The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
This light yellow background pattern consists of an irregular pattern of spots. Here's a light background pattern with yellowish tint.
Source V. Hartikainen
In the spirit of WWDC 2011, here is a dark iOS inspired linen pattern.
Source Atle Mo
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
Smooth Polaroid pattern with a light blue tint.
Source Daniel Beaton
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Seamless Dark Grunge Texture. Here's a new grunge texture for use as a background.
Source V. Hartikainen
Black brick wall pattern. Brick your site up!
Source Alex Parker
To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Abstract Tiled Background Extended 10
Source GDJ
Crossing lines with a subtle emboss effect on a dark background.
Source Stefan Aleksić
The tile can be had by selecting the rectangle in Inkscape and using shift+alt+i. Remixed from a drawing in 'Flowers of Song', Frederick Weatherly, 1895.
Source Firkin
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba