Everybody is paying $30 for the peel away ads. Being the cheapskate that I am , I went looking for an open source version.
Well here it is:
http://www.webpicasso.de/blog/pageear-free-peel-away-ad/
He has also created a plugin for wordpress, joomla and typo3
It does work great, I have it up on Traffic Jamms if you want to see it in action.
Enjoy!