As an exercise in refreshing my GOF-FU, I began a little project implementing the GOF patterns in JavaScript.
The app is a pattern browser that loads and executes the examples and displays the source and output in a tabbed editor.
All 24 patterns are implemented/approximated with exemplars and sample implementations. The supporting content is still a bit sparse but I do provide links to content.
You can find it at
http://skysanders.net/jspatterns