I stumbled upon repeatxrepeaty.com via a favorite blog of mine How About Orange which often showcases great places to get free fonts, desktops and background patterns among other things. I’m always on the hunt for a great background pattern for my blogs and I change my mind often as you’ll find if you hang out around these parts long enough!
Repeatxrepeaty.com seems to have a wide and varied assortment of seamless background patterns to suit, seriously, any style preference. They range from sweet and adorable to darker and edgier and some are just plain weird. Something for everyone! Definitely check it out if you are looking for a pattern under the Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 Unported License. My current pattern is from these folks and I’m pretty smitten with it!