Those looking for a good Nikon D300 review you can check out Thom Hogan.
For Pentax K20D, there is Carl Weese on-going, multi-part review at The Online Photographer: Part 1, Part 2. And he's not done yet, so check back every other day.
For those who buy cameras not to take pictures but as equipment fetish, try Google the internet is full of the other kind of reviews.
