Designers who Blog
"A Design blog for designers, photographers, writers, marketeers, etc., who blog." Yep, that about covers it.
Another favorite. Be sure to check out the 1-Hour Design Challenges.
Simply amazing- a one-stop online shop for links to most of the major design blogs' latest news. Very handy little thingy-ma-jigger.
Furniture, Interior Design, Architecture, Decor and Home & House Design: Tips, Gadgets & Inspiration for Your Home
Fabulous both for the site itself and for the links it offers....