Nice one:
http://www.appleblossomquilts.com/
Beth Ferriers:
http://www.applewd.com/
Several really nice BOM's going on now:
http://www.fatcatpatterns.com/
This is Barbara Dieges' site which was mentioned earlier:
http://www.bdieges.com/
There are probably thousands of free applique patterns on the internet. If it can be drawn--it can be appliqued.