Circles Brush Pack
This extensive brush pack contains 20 Illustrator brushes. The first 10 are circle scatter brushes, which you can use to make wicked patterns. Feel free to modify the parameters, to really get the most from these brushes. The other 10 are stacked lines, which were actually used to make the scatter brushes. You can use them to create your own cool circles, or to stroke other paths. As a bonus, the pack also includes the 10 shapes that I used to create the brushes.
Don't forget to check out my blog for other cool freebies!