I began to setup a filter for all that annoying MS Word Crap Tags that your backenduser always paste in the FCK Editor (I know the features of FCK and the semi-automatic cleanup and I know my editors, who give a fuck about using that

to prevent those suckers I will write a bunch of regEx which strip out the whole empty tags, proprietary attributes and tags etc.
So I need your contribution of the most hated tags you will always find in your sourcecode.
Maybe you can tell me your experience with that annoying stuff and how you handle this.
EDIT: On some host which allow exec() you can use HTMLTidy which works fine for that.
http://phpwcms.de/forum/viewtopic.php?p=68348 (OG removed the stuff in newer phpwcms versions!)
Thanks and best wishes
marcus