Gesture stencils based on drawings Rachel Glaves did for the book, "Designing Gestural Interfaces," suitable for using in documentation. The drawings are of hands performing common touchscreen gestures like tap, slide, point, drag, pinch, and spread. Available in OmniGraffle, Illustrator, Photoshop, Fireworks and SVG formats.
http://www.kickerstudio.com/blog/2008/12/touchscreen-stencils/