SmartyP has been playing with one of the new features in Silverlight 3 - the Bitmap API which provides the ability to render UIElements to a bitmap and provides direct access to the pixel level information of bitmaps.
I did a few searches tonight to get started playing with the Bitmap API and found several examples, but unfortunately none of them had any source code attached, and were written against previous SL3 betas which had different method signatures relevant to the bitmap rendering, so I wanted to go ahead and post a simple example of rendering out a UIElement to a bitmap. This example shows the output of rendering a TextBlock at various font sizes and image sizes and setting the resultant bitmaps as the source for three equal sized Image UIElements.