WBPP Results by Tom Whit, on Flickr
That's the results from a WBPP and a manual integration.
Manual Master by Tom Whit, on Flickr
That's the results from the same data set doing it all manually, calibrating, registration, de-mosaic, etc.
Yea the second one has some nasty gradients in it but at least the dust bunnies got taken out for the most part!