I have listened to Bob Brinker and subscribed - on and off - for the last 20 years. Yes, he blew it in 2008 and never admitted it - pretty annoying for someone like me who teaches his kids to take personal responsibility and also accept that they are not perfect. He is condescending and talks way too much about political garbage on his show that will have no influence in the long or short term or will have no effect on an individual listener's own investments.
However, I stayed the course and remained in equities in the 90's and took his advice in Jan 2000 and went completely into cash. In March 2003 - again on his advice - I went all in to equities and rode my investments up to where I tripled my portfolio.
Missing the 2008 drop caused me to lose a couple of years of performance, but I'm almost back to where I was in 2008 and way, way better than where I was in 2000. I may have lost 3 years of growth, but my peers who didn't heed Bob's advice in 2000, lost the entire decade.
In short, I rely on Bob for major trends and usually it works out well (like 2000 & 2003) - occasionally it doesn't (like 2008). Today (Sept 22. 2011), he put out a bulletin advising subscribers to go all in again in to equities(instead of dollar cost averaging back in) as he is predicting the S&P will be into the 1400's in 2012. If you are reading this at the end of 2012, you'll be able to make your own judgment on whether Bob still has it and is worth $185 a year or listening to him drone on about off-shore drilling or some other topic de jour.
For more detailed investment advice on the radio, I would recommend Ric Edelmen. Knowledgeable, entertaining, down to earth and strategic. In the end, however it will be gathering as much information from multiple sources and understanding economics - and keeping one's emotions and greed in check to be a successful long-term investor.