Here it is: http://www.photographyblog.com/reviews/pentax_kr_review/
There are both RAW and JPEG comparisons, e.g., the cropped ISO shootout, here. Do note the colour differences between the RAW and JPEG..
And there are full samples to download, including some original RAW files:-
http://www.photographyblog.com/reviews/pentax_kr_review/sample_images/
So, just enjoy yourself and happy measurbation!
Read Also:-
My K-r First Hands-ons (Tested Twice)