I wrote an answer on SO with some PowerShell code examples, but there's no syntax highlighting.  There are currently [10,898 <sub>[as of 07/10/2013]</sub>][1]  questions tagged [tag:powershell] on StackOverflow. Please add prettified syntax highlighting to Powershell questions.

These are the one's I experimented with in my original testing, IMO the first one would be the best option.

    <!-- language: lang-ps-->

    <!-- language: lang-ps1-->

    <!-- language: lang-powershell-->

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Side Note: there are only [1,244 <sub>[as of 07/10/2013]</sub>][2] questions tagged [tag:dart] on StackOverflow, and it is [already supported][3]


  [1]: http://stackoverflow.com/questions/tagged/powershell
  [2]: http://stackoverflow.com/questions/tagged/dart
  [3]: http://meta.stackoverflow.com/questions/981/syntax-highlighting-language-hints/75019#75019