Habu

Z 3 z 5 gwězdkow pógódnośony

wót gr33n3r dnja Měrc 6, 2008 · trajny wótkaz

I use this all the time and it's GREAT.
But have to give it a not good review because it doesn't work on Thunderbird 2.x.x.x without a simple/silly hack.

The suggestion to hackedit max version number here works for me:
http://sourceforge.net/forum/forum.php?thread_id=1758037&forum_id=658717
for Thunderbird 2.0.0.9
I put the hacked habu .xpi here:
http://www.dspsrv.com/~jamesc/torture/home/grease/
If you use it your computer might explode of course.