Rated 5 out of 5 stars
What can I say? This extension is a lifesaver. Whether it's stopping multiple tabs from loading at the same time (ie. due to restarting or crashing) or media with heavy file sizes, it has been a very appreciated part of my browsing experience. The Mozilla team should implement this add-on's features for FF4.
P.S. Ironically, an older version of IE had the ability to stop gifs from animating.