After I posted a Gauge sample with gdiplusx some months ago, Rafael Lippert from Brazil adapted my original code and created this cool analog watch, using GdiplusX and the 'ImageCanvas' class:
Cool isn't it ? it permits many customizations, and you may use it as a sample to learn other gdiplusx techniques.
You may get it directly from rafael' blog, at: http://rafaellippert.wordpress.com/2011/06/21/a-gdiplusx-analog-clock/
It's worth to spend some time in rafael's blog and website - www.lipsil.com.br . I'm sure you'll find some really very neat utilities.