Thomas Fuchs has been doing awesome work building on top of Prototype (the Javascript engine driving Ajax in Rails) to bring us script.aculo.us: Better effects and drag’n’drop capabilities. Together with the upload progress enhancements from Sean Treadway, we’re going to have a big upgrade to the Ajax capabilities of Rails in the next, forthcoming release (0.13).

If you want to see what’s in store for you, checkout the addition of drag’n’drop to Backpack. Shows off very nicely just how cool drag’n’drop can be in a Web 2.0 application.

There’s more chatter about this on Loud Thinking, Signal vs Noise, and mir.aculo.us.