Flash on demand, get rid of those blinking parts of websites, only use flash for the good parts.
mozdev.org – flashblock: index
Flashblock is an extension for the Mozilla, Firefox, and Netscape browsers that takes a pessimistic approach to dealing with Macromedia Flash content on a webpage and blocks ALL Flash content from loading. It then leaves placeholders on the webpage that allow you to click to download and then view the Flash content.