woody

Here are some
http://thequiltedsnail.com/ppieced.html
some more
http://piecebynumber.com/pastbom/archbom.htm
more
http://paperpanache.com/
already mentioned but here is the link
http://www.caroldoak.com/free-quilt-patterns.php
more
http://www.yvonnes.dk/patterns.htm
more
http://www.forestquilting.com/masterlistfree.html
and for those obsessed with PP and want a challenge (these you need to purchase but WOW)
http://www.silverliningsoriginals.com/

That should keep you busy for a while