For a list of more pidgin plugins see their plugins listing page at http://developer.pidgin.im/wiki/ThirdPartyPlugins
Growl notification plugin for pidgin.
Everytime someone messages you, there's a growl notification. It's not very configurable yet.
Perl plugin to shorten long urls. Especially useful for finch. Download and put in plugins directory. URLs are shortened as they come in if they exceed maximum length setting. no action required. Requires some perl libraries to work.