Related
Couple of months back I had covered Greasemonkey, a powerful and all-favorite firefox extension.
The result is displayed directly on the webpage and can be instantly removed with a mouse click.
Which dictionary is selected depends on customizable keystrokes.
VIDEO and TRAILERS:
8.Apple Trailer Download - lets you easily download full movie trailers from apple.com.
The script shows a small download menu at the top of supported video pages(image below).
Looks great, check it out here
11.Gmail + Reader Integrator - integrates Google Reader into Gmail.
This literally saves you one extra tab.
This is the only listed plugin that requires basic html knowledge.
20.Instead of 20’th Addon I am including quick Greasemonkey installation guide:
