Script Summary: Checks your modqueue, displays the exclamation icon and queue count near your modmail icon.
You should also check out Reddit Moderator Admin, http://userscripts.org/scripts/show/94851
// Released: 14 October 2011
// Update: 21 Oct 2011, v1.02, fixed execution in Firefox. Thanks to TedFromTheFuture.
// Update: 11 Jan 2011, v1.03, fixed icon display after reddit style changes.