Illustrator CS4 introduces the new Blob Brush tool to users. Instead of a regular brush stroke, painting with the blog brush gives you a filled, compound path. Any new shape painted with the same color and stroke will automatically merge with existing shapes with the same settings. The Blob Brush tool will pick up style attributes from other objects and has numerous other options to explore and play around with. See how to use this fun new tool, the Blob Brush in this Illustrator CS4 tutorial.