Real world RJS templates - From Scott Raymond.

Joyful Javascript - Experiences of joyent with Ruby on Rails 1.1 and Javascript

Javascript events - A little hard to follow.

Onmouseover in Javascript

HTML DOM Event Object in Javascript

CSS Links - How to make anchor links look different

A little Javscript tutorial on hiding divs with Javascript.

Drag and Drop at AJAX Patterns.

An excellent demo page on Drag and Drop with Javascript.

A fantastic Javascript demo Magnetic Poetry.

A poster by Jesse James Garrett : The Elements of User Experience.

A different direction with Ruby on Rails

Javascript Weenie - A great resource page with lots of tutorials to learn different aspects of Javascript.