The new Wiki component is very nice, and it does allow you to easily specify a code fragment. However, it would be outstanding to be able to specify the language and have the resulting HTML use the SyntaxHighlighter (http://alexgorbatchev.com/wiki/SyntaxHighlighter) to nicely format the code in the language-specific manner. For example, this is how the feature works on Wordpress.com: http://en.support.wordpress.com/code/posting-source-code/

The SyntaxHighlighter has a number of features and options that'd make it a very nice addition to an already awesome Wiki component.