In today's installment of Photoshop CS5 Top 5, Deke demonstrates Photoshop's bristle brushes, which simulate traditional paint brushes—the kind your local art-supply store sells—and its new Mixer brush, which lets you give a photo a painterly look. Along the way, Deke passes along a tip for customizing Photoshop's interface—one of those little chores that can save so much time, but that so few of us do.