title: How to style a fancy vertical ProgressBar correctly?
body: <p>I'm trying to make a stylish progress bar, but I'm having a problem with its vertical version. A picture is worth a thousand words:</p>
  
  <p><a href="http://img402.imageshack.us/img402/2033/progressq.gif" rel="nofollow noreferrer">http://img402.imageshack.us/img402/2033/progressq.gif</a></p>
  
  <p>Everything I've attempted so far has resulted in Wrong. How do I achieve Right? I'd prefer a XAML only solution unless it's slow or causes flickering when the progress bar is updated many times per second.</p>