This script will let you click on a thread title and it will take you directly to the last unread post. I find it extremely useful and maybe you will too.
1) Use Firefox
2) Install the Greasemonkey extension http://greasemonkey.mozdev.org/
3) Install this script by clicking 'install script' http://userscripts.org/scripts/show/4633
Feel free to share any other useful Greasemonkey scripts you know.