One of my favorite techniques in photography is to move the camera during the time the shutter is open, to achieve an intentional blur of the scene before me.  I used this technique in the garden next to the Art Institute in Chicago to create Impressionist Garden.

A digital in-camera motion blur, processed using Adobe Photoshop.  Signed, limited edition of 100 prints in each size (see pull-down size/pricelist). Archival printing on an Epson Pro 3800 with Ultrachrome K3 ink and Red River Arctic Polar Luster paper.