"ClickToPlugin is a lightweight and highly customizable extension that prevents Safari from launching plug-ins automatically, resulting in faster browsing, reduced fan usage, and increased battery life. It replaces every plug-in object by an unobtrusive placeholder that can be clicked to load the embedded content. Further, it can replace many plug-in-based media players by Safari’s native HTML5 media player." Installed.

"Tourettes Machine is a firefox plugin that randomly adds swear words to your
form fields and text areas as you type." I think they really mean "Coprolalia Machine", but that's the pedant in me talking. The joys of javascript, eh?

"GreaseKit is successor of Creammonkey. This software adds Greasemonkey-like user scripting to Safari, Mailplane, Diet Pibb.app and all WebKit applications." Looks good.

Pennypacker is a Firefox extension that enhances Penny Arcade with favourites and tagging.

This kind of thing always amuses me - clouding real data by making ghost-queries as background noise.

LanOSD is a lot like growl, but it looks nicer. It also *might* work in 10.2

Awesome - realtime eyedropper extension for Firefox