GitHub Live
githublive.codeofrob.com
githublive.codeofrob.com
Sidenote: instead of shrinking the list to the left (it becomes a little harder to read as languages are added), you could wrap them more fluidly with Isotope (http://isotope.metafizzy.co).
Edit: Or perhaps it's because JavaScript is finally becoming more popular, despite being old. Lots of new libraries and applications are being written in it.