Everyone on here is probably sick of me touting him, but I read Barry Ritholtz (The Big Picture blog) every day. He does great analysis of economic trends and issues. He does not recommend specific stocks.
I also pay attention to anything macro that Jim Rogers says. Historically, he has been great at the macro and business/sector timing mentioned by Jacob, which is the basis of my analysis. Not everything he says goes on his blog (does lots of interviews).
I also really like Soros and Buffett. Soros is crazy intelligent and Buffett is ultra ultra ultra rational. Again, both are good for macro analysis, but neither really have blogs. You will have to look for interviews or other pieces of information they let into the public domain.
I pay attention to what John Paulson (hedge fund manager) is doing and saying. He does a few interviews, but no blog. His actions are more important than his words.
I will second Bill Gross.
There is no one I specifically follow for individual stock picks. I get them from everywhere. Even morons can find good ones now and then. All I do is examine the analysis made by the person recommending the stock and if it sounds reasonable I usually research it further.
I have gotten a lot from Fast Money and Mad Money. However, the vast majority of stocks mentioned on those shows are garbage, as it's impossible to come up with great ideas for 260 days a year. That does not mean they don't find good stocks now and then.
Same goes for sites like Motley Fool and Seeking Alpha. They are just a place to get a few ideas. Not places that make decisions for you.