Digital BW, The Print

There is a site that allows you to "opt out" of many (not all) of the pop-up
ads:

http://technoerotica.net/mylog/optouts.html

Also, here are more programs that allow you to kill pop-ups:

http://www.techtv.com/screensavers/twistedlist/story/0,24330,3365598,00.html