I spend most of my time behind the camera trying to AVOID blurred movement in my shots and have deleted countless pictures due to a fuzzy hand or foot.
The shots below, however, are the exceptions. I can't say I set out to achieve this look, but I kind of think they're cool.
Ryan, playing "human basketball net" with Pat:
Here's Pat, "demonstrating" how to fly the kite. What intrigues me about this one is that Pat is mostly in focus (except for his legs) but the background is blurry. How did I do that?!