I've been reading Popular Photography magazine for at least 20 years and my only real complaint is that it isn't a weekly magazine, rather than a monthly. I just can't seem to get my fill of the excellent articles, reviews, previews, and photos contained in every issue. Whatever your level of photographic expertise, you'll find something between the covers of Popular Photography to appeal to you.
Recent articles I've enjoyed are Photoshop Fixes, a review of the Nikon D300, an article on how to improve nature photographs, and a test of the Olympus E-3. But, let me tell you a secret: I also enjoy looking over the advertising in the magazine! If you love "window shopping" or are actively engaged in looking for more photo equipment to add to your collection, the ads in Popular Photography are a favorite focal point of mine.
I highly recommend Popularly Photography to amateurs and pros alike.