jsfiddle has a great feature that can load files from gist.

• Display Fiddle from Gist — jsFiddle v0.5a2 documentation

Here’s how it works.

• https://gist.github.com/1148809
• http://jsfiddle.net/gh/gist/jQuery/1.6.2/1148809/

All you need to do is just pushing the commit with specified filename to your gist repository. It’s so easy and extremely useful :D