Template:Skype

<skype action="chat" style="noimage" >{{{nick}}}</skype> <foobar arg="blat">Template:My template</foobar>

but you can work around it with the #tag parser function that converts tags into parser functions:

lang="js"

↓

Content of MediaWiki:Common.js

<skype action="chat" style="chat">{{{nick}}}</skype>