A CodePen by Phillip Jackson. Animated Circle - <b>Work in Progress</b>
Simple circle, with a center point, arm and pointer on the circle itself. Arm should rotate, like a clock. 

2/23/13 - Updated positions and now using margins. Also, removed the use of em's and moved to pixels. This allowed me to get rid of the dynamic/wild movement of the object when viewed in different view ports. 

2/24/13 - Got everything sorted with timing and margins and such. But after adding the div.line and adding the animation to it, I have come to the conclusion that I think this would be better done with HTML5 Canvas instead. It would take an insane amount of transforms to get the left edge of the line to smoothly follow the outer dot. If anyone would want to fork this and play with it, feel free. I am starting over with HTML5 Canvas, but since I am just getting started with it, it might take me sometime before I get anything up. 
<br>
<b>Resources and Inspiration</b>
<ul>
<li>Animated Gif that inspired this experiment - http://1ucasvb.tumblr.com/post/42881722643/the-familiar-trigonometric-functions-can-be</li>
<li>Lea Verou Blog - http://lea.verou.me/2012/02/moving-an-element-along-a-circle/</li>