Here's the world-famous Balloon Juice Pie Filter! (works as of 1/16/2011)
To use this, you’ll need Greasemonkey : for FireFox, for Internet Explorer - not sure if other browsers have GM support or not.
You can download it, here.
You’ll have to do some minor editing on the script itself, primarily to add your list of targets. Again, all the stuff you need to change is clearly commented. The things you need to edit are right there at the top. It’s basically just a matter of changing the default ‘baddies’ names to the names of the people you want. You can have as many names as you want. If you need more help, feel free to ask.