I have way too many favorite photog's blogs that I read to ever make a list. A great blog (not a photographer's, but with resources for photography) is http://pifphoto.com/
It has great articles about the business of photography, photoshop techniques, etc, but the main reason it started was to give away freebies. So there is always something there to download for free, from well-esblished designers, photographers, etc, who usually sell the stuff. It also gives them a chance to direct traffic to their website, so it's promotional for them too. Ryan says some of the stuff is too girly, and yeah, there are always tons of card templates and stuff like that. But you can also find great storyboards, fonts, photoshop actions and lightroom presets, album templates, etc. I love checking in there every few days to see what free goodies I can get.
Probably my favorite blog, if I had to name one, isn't photography related at all. Well, I guess it's about art. It is http://postsecret.blogspot.com/ It is absolutely addicting. It only updates on Sundays, and it is the first thing I do on Sunday mornings drinking my coffee.